Predicate Devices

K040120 (LIAISON EBV IgM)

Reference Devices

Not Found

AI/ML (Artificial Intelligence / Machine Learning)

No
The description details a standard immunoassay technology and does not mention any AI or ML components.

Therapeutic

No
The device is for in vitro diagnostic use, intended to aid in the diagnosis of Epstein-Barr virus infection by detecting IgM antibodies. It does not directly treat or prevent a disease.

Diagnostic

Yes

The "Intended Use / Indications for Use" section explicitly states that the assay "is intended for use as an aid in the diagnosis of Epstein-Barr virus infection." This clearly indicates its diagnostic purpose.

SaMD (Software as a Medical Device)

No

The device description clearly states it is a "fully automated 2-step sandwich immunoassay using acridinium ester chemiluminescent technology" and involves "Ancillary Well Reagent and the Solid Phase" and "Lite Reagent". These are physical components of an in vitro diagnostic assay, not solely software.

IVD (In Vitro Diagnostic)

Yes, this device is an IVD (In Vitro Diagnostic).

Here's why:

Intended Use/Indications for Use: The very first sentence explicitly states "The ADVIA Centaur EBV-VCA IgM (EBVM) assay is for in vitro diagnostic use".
Device Description: The description details a laboratory test performed on human specimens (serum and plasma) using an automated immunoassay system. This is characteristic of an in vitro diagnostic device.
Intended User/Care Setting: It is indicated for "in vitro diagnostic use", which implies use in a laboratory or clinical setting for diagnostic purposes.

The entire document describes a device designed to test human samples outside of the body to aid in the diagnosis of a disease, which is the definition of an In Vitro Diagnostic device.

PCCP (Predetermined Change Control Plan) Authorized

N/A

Overview

Intended Use / Indications for Use

The ADVIA Centaur EBV-VCA IgM (EBVM) assay is for in vitro diagnostic use in the qualitative detection of lgM antibodies to the viral capsid antigen (VCA) of the Epstein-Barr virus (EBV) in human pediatric (2-21 years old) and adult serum and plasma (EDTA and lithium heparin) using the ADVIA Centaur XP system. When used in conjunction with other EBV markers, this assay is intended for use as an aid in the diagnosis of Epstein-Barr virus infection, such as infectious mononucleosis.

Product codes (comma separated list FDA assigned to the subject device)

LSE

Device Description

The ADVIA Centaur EBV-VCA IgM assay is a fully automated 2-step sandwich immunoassay using acridinium ester chemiluminescent technology. The specimen is incubated with the Ancillary Well Reagent and the Solid Phase, which contains an EBV-VCA IgM specific antigen. Antigen-antibody complexes will form if anti EBV-VCA IgM antibody is present in the specimen. The Lite Reagent contains monoclonal anti-human IgM labeled with acridinium ester and is used to detect EBV-VCA IgM in the specimen.

Mentions image processing

Not Found

Mentions AI, DNN, or ML

Not Found

Input Imaging Modality

Not Found

Anatomical Site

Not Found

Indicated Patient Age Range

pediatric (2-21 years old) and adult

Intended User / Care Setting

Not Found

Description of the training set, sample size, data source, and annotation protocol

Not Found

Description of the test set, sample size, data source, and annotation protocol

A multisite clinical study to compare the reference method with ADVIA Centaur EBV-VCA IgM was performed.
A total of 1428 leftover samples were collected over a contiguous time period from individuals for whom an EBV test was ordered (population 1). Of these, 188 were from unclassified serostatus individuals. Two hundred and two (202) samples with a known EBV VCA IgM positive result (population 2) were evaluated as well. Of these, 4 were from unclassified serostatus individuals. The study results otherwise showed that these populations included individuals with acute infection, past infection, or no serologic evidence of EBV infection.

Samples were tested using the ADVIA Centaur EBVM assay and an FDA-cleared EBV VCA IgM reference assay. Equivocal reference assay results were resolved by 2 other comparative assays.

Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)

Clinical Study:
Sample Size: Population 1 (1428 samples), Population 2 (202 samples). Pediatric population from Population 1 (479 samples), Pediatric population from Population 2 (155 samples).
Key Results for Total Study Population (Population 1):
Negative percent agreement (NPA) = 96.7% (1294/1338), 95% CI: 95.6% - 97.5%
Positive percent agreement (PPA) = 68.9% (62/90), 95% CI: 58.7% - 77.5%
Positive Agreement for primary acute patients = 90.6 % (48 / 53), 95% Confidence Interval = 79.7 % - 95.9 %

Key Results for Total Study Population (Population 2):
Positive percent agreement (PPA) = 100% (202/202), 95% CI: 98.1% - 100%

Key Results for Pediatric Population (Population 1):
Negative percent agreement (NPA) = 95.3% (402/422), 95% CI: 92.8% - 96.9%
Positive percent agreement (PPA) = 84.2% (48/57), 95% CI: 72.6% - 91.5%
Positive Agreement for primary acute patients = 91.3 % (42 / 46), 95% Confidence Interval = 79.7 % - 96.6 %

Key Results for Pediatric Population (Population 2):
Positive percent agreement (PPA) = 100% (155/155), 95% CI: 97.6% - 100%

Precision Study:
Determined in accordance with CLSI EP05-A3 using Negative and Positive Controls, 5 serum samples, and 5 EDTA plasma samples. Samples (N=240) were assayed in replicates of 2 with 2 runs per day using three reagent lots in a 20-day protocol.
Total Precision (ranged from):
Serum: SD 0.087 to 0.649 Index, CV 7.0% to 11.6%
Plasma, EDTA: SD 0.062 to 0.709 Index, CV 7.7% to 10.2%
Controls: SD 0.024 and 0.247 for Control 1 and 2, CV 8.2% for Control 2 (N/A for Control 1)

Reproducibility Study:
Determined in accordance with CLSI EP05-A3. Testing performed using 3 external sites and 1 reagent lot. A 4-member serum panel and a 4-member plasma EDTA panel were assayed in replicates of 3 with 2 runs per day, over 5 days (N = 90 for each sample).
Reproducibility (ranged from):
Serum: SD 0.034 to 0.131, CV 3.4% to 4.7%
Plasma, EDTA: SD 0.037 to 0.180, CV 3.7% to 4.9%
Controls: SD 0.017 and 0.297 for Control 1 and 2, CV 9.3% for Control 2 (N/A for Control 1)
Assay was designed to have reproducibility of 0.80 Index concentration.

Specimen Equivalency Study:
Determined with weighted Deming regression model using ADVIA Centaur XP in accordance with CLSI document EP09c-ed3.
Performed using 70 sets of matched samples of three matrixes (serum separator tube (SST), EDTA plasma and lithium heparin plasma) from commercial sources. Samples analyzed in one replicate in randomized order using one reagent lot.
Results support that EDTA Plasma and Lithium Heparin Plasma are equivalent matrixes to Serum.
Plasma, EDTA vs. Serum: y=1.00x-0.03 Index, r=1.00
Plasma, lithium heparin vs. Serum: y=1.00x-0.05 Index, r=1.00

Interferences:
Evaluated using ADVIA Centaur XP system in accordance with CLSI documents EP07-ed3 and EP-37-ed1.
Substances tested (Hemoglobin, Bilirubin conjugated/unconjugated, Lipemia, Biotin, Cholesterol, Protein) do not interfere with the assay in different matrixes at specified concentrations.

Cross-reactivity:
Evaluated with other viral antibodies and disease state specimens using ADVIA Centaur system.
371 samples analyzed with ADVIA Centaur EBV-VCA IgM and a comparative assay.
Data summarized in table showing assay results (Nonreactive/Reactive) and comparative assay results (Negative/Equivocal/Positive) for various clinical categories.

Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)

Negative percent agreement (NPA)
Positive percent agreement (PPA)
Coefficient of variation (CV)
Standard deviation (SD)
Correlation coefficient (r)

Predicate Device(s): If the device was cleared using the 510(k) pathway, identify the Predicate Device(s) K/DEN number used to claim substantial equivalence and list them here in a comma separated list exactly as they appear in the text. List the primary predicate first in the list.

K040120 (LIAISON EBV IgM)

Reference Device(s): Identify the Reference Device(s) K/DEN number and list them here in a comma separated list exactly as they appear in the text.

Not Found

Predetermined Change Control Plan (PCCP) - All Relevant Information for the subject device only (e.g. presence / absence, what scope was granted / cleared under the PCCP, any restrictions, etc).

Not Found

Regulation Number and Section

§ 866.3235 Epstein-Barr virus serological reagents.

(a)
Identification. Epstein-Barr virus serological reagents are devices that consist of antigens and antisera used in serological tests to identify antibodies to Epstein-Barr virus in serum. The identification aids in the diagnosis of Epstein-Barr virus infections and provides epidemiological information on diseases caused by these viruses. Epstein-Barr viruses are thought to cause infectious mononucleosis and have been associated with Burkitt's lymphoma (a tumor of the jaw in African children and young adults) and postnasal carcinoma (cancer).(b)
Classification. Class I (general controls).

Summary

0

August 07, 2024

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Biokit S.A. Dominique Monferrer Regulatory Affairs Director Av. Can Montcau 7 Llicà d'Amunt. 08186 Spain

Re: K233606

Trade/Device Name: ADVIA Centaur EBV-VCA IgM Regulation Number: 21 CFR 866.3235 Regulation Name: Epstein-Barr Virus Serological Reagents Regulatory Class: Class I, reserved Product Code: LSE Dated: July 29, 2024 Received: July 29, 2024

Dear Dominique Monferrer:

We have reviewed your section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (the Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database available at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.

If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.

Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).

1

Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30, Design controls; 21 CFR 820.90, Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review, the QS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).

Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801 and Part 809); medical device reporting of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safetyreporting-combination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.

Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.

For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).

Sincerely,

Bhawna Poonia -S

for Maria Garcia, Ph.D. Assistant Director Division of Microbiology Devices OHT7: Office of In Vitro Diagnostics Office of Product Evaluation and Quality Center for Devices and Radiological Health

Enclosure

2

DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration

Indications for Use

Submission Number (if known)

K233606

Device Name

ADVIA Centaur EBV-VCA IgM (10720837)

Indications for Use (Describe)
--------------------------------	--

The ADVIA Centaur EBV-VCA IgM (EBVM) assay is for in vitro diagnostic use in the qualitative detection of lgM antibodies to the viral capsid antigen (VCA) of the Epstein-Barr virus (EBV) in human pediatric (2-21 years old) and adult serum and plasma (EDTA and lithium heparin) using the ADVIA Centaur XP system. When used in conjunction with other EBV markers, this assay is intended for use as an aid in the diagnosis of Epstein-Barr virus infection, such as infectious mononucleosis.

Type of Use (Select one or both, as applicable)

Prescription Use (Part 21 CFR 801 Subpart D)

Over-The-Counter Use (21 CFR 801 Subpart C)

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510(k) SUMMARY

This 510(k) Summary of Safety and Effectiveness is being submitted in accordance with the requirements of the Safe Medical Device Act of 1990 and 21 CFR 807.92.

| 1. Submitter's Information | Biokit, S.A.
Av. Can Montcau, 7
Lliçà d'Amunt 08186
Barcelona (Spain) |

----------------------------	--------------------------------------------------------------------------------

| 2. Contact Person | Dominique Monferrer, Regulatory Affairs Director
Phone: +34 93 860 90 00
Email: dmonferrer@werfen.com |

-------------------	-------------------------------------------------------------------------------------------------------------

3. Preparation Date	2023-Nov-09
---------------------	-------------

| 4. Device Trade

Name	ADVIA Centaur EBV-VCA IgM
--------------------------	---------------------------

| 5. Regulatory

Information	Regulation Number	21 CFR 866.3235
	Regulation Description	Epstein-Barr Virus
serological reagents
	Classification	Class I (general
controls)
	Product Code	LSE
	Classification Panel	Microbiology

6. Predicate Device	K040120 (LIAISON EBV IgM)
---------------------	---------------------------

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| 7. Indications for
Use / Intended
Use | The ADVIA Centaur EBV-VCA IgM (EBVM) assay
is for in vitro diagnostic use in the qualitative
detection of IgM antibodies to the viral capsid
antigen (VCA) of the Epstein-Barr virus (EBV) in
human pediatric (2-21 years old) and adult
serum and plasma (EDTA and lithium heparin)
using the ADVIA Centaur XP system. When used
in conjunction with other EBV markers, this assay
is intended for use as an aid in the diagnosis of
Epstein-Barr virus infection, such as infectious
mononucleosis. |

---------------------------------------------

-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| 8. Principles of the
procedure | The ADVIA Centaur EBV-VCA IgM assay is a fully
automated 2-step sandwich immunoassay using
acridinium ester chemiluminescent technology.
The specimen is incubated with the Ancillary Well
Reagent and the Solid Phase, which contains an
EBV-VCA IgM specific antigen. Antigen-antibody
complexes will form if anti EBV-VCA IgM antibody
is present in the specimen. The Lite Reagent
contains monoclonal anti-human IgM labeled with
acridinium ester and is used to detect EBV-VCA
IgM in the specimen. |

-----------------------------------

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

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COMPARISON PREDICATE
Item	Predicate	New Device
Trade Names	LIAISON EBV IgM	ADVIA Centaur EBV-VCA IgM
510K no.	K040120	K233606
Manufacturer	DiaSorin, S.p.A.
Via Crescentino, snc
13040 Saluggia (Vercelli) Italy	Siemens Healthcare
Diagnostics Inc.
511 Benedict Avenue,
Tarrytown, NY 10591 USA
Intended use	The LIAISON EBV IgM assay uses chemiluminescent immunoassay (CLIA) technology on the LIAISON Analyzer family* for the qualitative determination of specific IgM antibodies to Epstein-Barr virus (EBV) viral capsid antigen (VCA) p18 synthetic peptide in human serum. When performed in conjunction with other EBV markers, this assay can be used as an aid in the clinical laboratory diagnosis of Epstein-Barr Viral Syndrome in patients with signs and symptoms of EBV infection such as infectious mononucleosis.
*(LIAISON and LIAISON XL)	The ADVIA Centaur EBV-VCA IgM (EBVM) assay is for in vitro diagnostic use in the qualitative detection of IgM antibodies to the viral capsid antigen (VCA) of the Epstein-Barr virus (EBV) in human pediatric (2-21 years old) and adult serum and plasma (EDTA and lithium heparin) using the ADVIA Centaur XP system. When used in conjunction with other EBV markers, this assay is intended for use as an aid in the diagnosis of Epstein-Barr virus infection, such as infectious mononucleosis.
	Similarities
Measurand	Epstein Barr Virus IgM to Viral Capsid Antigen	To detect IgM antibodies to the viral capsid antigen (VCA) of Epstein Barr virus (EBV).
Regulation Section	21 CFR 866.3235	Same
Product Code	LLM, LSE	LSE
Classification	Class I (general controls)	Same
Assay Type	Qualitative	Same
Technology	Chemiluminescent
immunoassay (CLIA)	Same
Antigen	p18	Same
Differences
Sample type	Human serum	Human serum and plasma
(EDTA and lithium heparin)
Target
Population	Adults	Pediatric and adult

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9. Performance Summary

Clinical Study

A multisite clinical study to compare the reference method with ADVIA Centaur EBV-VCA IgM was performed.

Comparison of Results: Total Study Population

A total of 1428 leftover samples were collected over a contiguous time period from individuals for whom an EBV test was ordered (population 1). Of these, 188 were from unclassified serostatus individuals. Two hundred and two (202) samples with a known EBV VCA IgM positive result (population 2) were evaluated as well. Of these, 4 were from unclassified serostatus individuals. The study results otherwise showed that these populations included individuals with acute infection, past infection, or no serologic evidence of EBV infection.

Samples were tested using the ADVIA Centaur EBVM assay and an FDA-cleared EBV VCA IgM reference assay. Equivocal reference assay results were resolved by 2 other comparative assays. The results obtained are presented in the following tables:

7

Population 1
ADVIA Centaur
EBVM Assay	Reference Assay
	Negative	Equivocal	Positive	Total
Nonreactive	1294	2	26	1322
Reactive	41	3	62	106
Total	1335	5	88	1428
	NPAa=96.7%		PPAc=68.9%
	(1294/1338)		(62/90)
	95% CIb: 95.6% -		95% CI: 58.7% -
	97.5%		77.5%

a Negative percent agreement.

b Confidence interval.

് Positive percent agreement.

Out of 90 samples that were positive on the reference assay, 53 were primary acute, and of those, 48 samples were positive on the ADVIA Centaur EBVM assay.

% Positive Agreement for primary acute patients = 90.6 % (48 / 53) 95% Confidence Interval = 79.7 % - 95.9 %

In this study, primary acute infection was defined by the presence of either EBV IgM or heterophile antibodies, and the absence of EBNA IgG.

Population 2
ADVIA Centaur
EBM Assay	Negative	Equivocal	Positive	Total
Nonreactive	0	0	0	0
Reactive	0	0	202	202
Total	0	0	202	202
N/Aa		PPAb=100% (202/202)
95% CIc: 98.1% - 100%

a Not applicable.

ե Positive percent agreement.

Confidence interval.

8

Percent of Agreement: Pediatric Population

The agreement between the ADVIA Centaur EBVM assay and the reference EBV VCA IgM assay in the pediatric subjects from Population 1 and 2 is presented in the tables below.

Population 1 included samples from subjects with signs and symptoms for whom an EBV antibody test was ordered. Of these, 84 were from unclassified serostatus individuals. The study results otherwise showed that this population included individuals with acute, past, or no serologic evidence of EBV infection. Population 2 included samples with a known EBV VCA IgM positive result to supplement numbers for positive EBV VCA IqM. Of these, 3 were from unclassified serostatus individuals.

Population 1
ADVIA Centaur
EBVM Assay	Reference Assay
Negative	Equivocal	Positive	Total
Nonreactive	402	0	9	411
Reactive	19	1	48	68
Total	421	1	57	479
	NPAa=95.3%
(402/422)
95% CIb: 92.8% -
96.9%		PPAc=84.2%
(48/57)
95% CI: 72.6% -
91.5%

a Negative percent agreement.

b Confidence interval.

C Positive percent agreement.

Out of 57 pediatric subject samples that were positive on the reference assay, 46 were primary acute, and of those, 42 samples were positive on the ADVIA Centaur EBVM assay.

% Positive Agreement for primary acute patients = 91.3 % (42 / 46) 95% Confidence Interval = 79.7 % - 96.6 %

In this study, primary acute infection was defined by the presence of either EBV IgM or heterophile antibodies, and the absence of EBNA IqG.

9

Population 2
ADVIA Centaur
EBVM Assay	Reference Assay
	Negative	Equivocal	Positive	Total
Nonreactive	0	0	0	0
Reactive	0	0	155	155
Total	0	0	155	155
	N/Aa	PPAb=100% (155/155)
95% CIc: 97.6% - 100%

a Not applicable.

b Positive percent agreement.

Confidence interval.

Precision

Precision was determined in accordance with CLSI EP05-A3 using the Negative and Positive Controls as well as 5 serum samples and 5 EDTA plasma samples prepared at different levels across the assay range. Samples (N=240) were assayed in replicates of 2 with 2 runs per day using three reagent lots in a 20day protocol.

| Sample | Mean
Value
(Index) | Repeatability | | Between Run | | Between Day | | Between Lot | | Total
Precision | |
|-------------------|--------------------------|----------------|------------|---------------|-----------|---------------|-----------|---------------|-----------|--------------------|-----------|
| | | SDb
(Index) | CVc
(%) | SD
(Index) | CV
(%) | SD
(Index) | CV
(%) | SD
(Index) | CV
(%) | SD
(Index) | CV
(%) |
| Serum
A | 0.75 | 0.019 | 2.5 | 0.018 | 2.4 | 0.017 | 2.3 | 0.081 | 10.9 | 0.087 | 11.6 |
| Serum
B | 0.96 | 0.024 | 2.5 | 0.023 | 2.4 | 0.023 | 2.4 | 0.076 | 8.0 | 0.086 | 9.0 |
| Serum
C | 1.39 | 0.034 | 2.4 | 0.030 | 2.2 | 0.041 | 2.9 | 0.119 | 8.5 | 0.133 | 9.6 |
| Serum
D | 3.16 | 0.075 | 2.4 | 0.053 | 1.7 | 0.101 | 3.2 | 0.173 | 5.5 | 0.221 | 7.0 |
| Serum
E | 7.22 | 0.217 | 3.0 | 0.140 | 1.9 | 0.269 | 3.7 | 0.531 | 7.4 | 0.649 | 9.0 |
| Plasma,
EDTA A | 0.74 | 0.019 | 2.6 | 0.026 | 3.4 | 0.023 | 3.0 | 0.048 | 6.4 | 0.062 | 8.3 |
| Plasma,
EDTA B | 1.00 | 0.022 | 2.2 | 0.031 | 3.1 | 0.027 | 2.7 | 0.061 | 6.1 | 0.077 | 7.7 |

The following results are representative of the performance of the assay:

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| Sample | Mean
Value
(Index) | Repeatability | | Between Run | | Between Day | | Between Lot | | Total
Precision | |
|-------------------|--------------------------|----------------|------------|---------------|-----------|---------------|-----------|---------------|-----------|--------------------|-----------|
| | | SDb
(Index) | CVc
(%) | SD
(Index) | CV
(%) | SD
(Index) | CV
(%) | SD
(Index) | CV
(%) | SD
(Index) | CV
(%) |
| Plasma,
EDTA C | 1.40 | 0.029 | 2.1 | 0.045 | 3.2 | 0.041 | 2.9 | 0.118 | 8.4 | 0.136 | 9.7 |
| Plasma,
EDTA D | 3.35 | 0.081 | 2.4 | 0.062 | 1.8 | 0.111 | 3.3 | 0.308 | 9.2 | 0.342 | 10.2 |
| Plasma,
EDTA E | 7.63 | 0.218 | 2.9 | 0.367 | 4.8 | 0.320 | 4.2 | 0.466 | 6.1 | 0.709 | 9.3 |
| Control
1 | 0.28 | 0.012 | N/Ac | 0.014 | N/A | 0.010 | N/A | 0.011 | N/A | 0.024 | N/A |
| Control
2 | 3.02 | 0.071 | 2.3 | 0.049 | 1.6 | 0.088 | 2.9 | 0.214 | 7.1 | 0.247 | 8.2 |

a Standard deviation.

b Coefficient of variation.

ς Not applicable.

Reproducibility

Reproducibility was determined in accordance with CLSI EP05-A3. Testing was performed using 3 external sites and 1 reagent lot. A 4-member serum panel and a 4-member plasma EDTA panel were assayed in replicates of 3 with 2 runs per day, over 5 days (N = 90 for each sample).

| Sample | Na | Mean
(Index) | Within-Run
Repeatability | | Between-
Runs | | Between-
Days | | Between-
Sites | | Reproducibility | |
|-------------------|----|-----------------|-----------------------------|---------|------------------|--------|------------------|--------|-------------------|--------|-----------------|--------|
| | | | SDb | CVc (%) | SD | CV (%) | SD | CV (%) | SD | CV (%) | SD | CV (%) |
| Serum A | 90 | 0.85 | 0.023 | 2.7 | 0.028 | 3.3 | 0.004 | 0.5 | 0.017 | 2.0 | 0.040 | 4.7 |
| Serum B | 90 | 1.00 | 0.024 | 2.4 | 0.020 | 2.1 | 0.008 | 0.8 | 0.011 | 1.1 | 0.034 | 3.5 |
| Serum C | 90 | 1.57 | 0.038 | 2.4 | 0.022 | 1.4 | 0.014 | 0.9 | 0.028 | 1.8 | 0.054 | 3.4 |
| Serum D | 90 | 3.30 | 0.099 | 3.0 | 0.025 | 0.8 | 0.009 | 0.3 | 0.081 | 2.5 | 0.131 | 4.0 |
| Plasma,
EDTA A | 90 | 0.75 | 0.023 | N/A | 0.026 | N/A | 0.000 | N/A | 0.013 | N/A | 0.037 | N/A |
| Plasma,
EDTA B | 90 | 1.00 | 0.035 | 3.5 | 0.023 | 2.3 | 0.000 | 0.0 | 0.009 | 0.9 | 0.043 | 4.3 |
| Plasma,
EDTA C | 90 | 1.49 | 0.036 | 2.4 | 0.038 | 2.5 | 0.000 | 0.0 | 0.016 | 1.1 | 0.055 | 3.7 |
| Plasma,
EDTA D | 90 | 3.72 | 0.103 | 2.8 | 0.088 | 2.4 | 0.054 | 1.4 | 0.106 | 2.8 | 0.180 | 4.9 |
| Control 1 | 90 | 0.24 | 0.012 | N/A | 0.004 | N/A | 0.006 | N/A | 0.009 | N/A | 0.017 | N/A |
| Control 2 | 90 | 3.20 | 0.248 | 7.8 | 0.000 | 0.0 | 0.075 | 2.3 | 0.145 | 4.5 | 0.297 | 9.3 |

a Number of measurements

b Standard deviation

Coefficient of variation

d Not Applicable

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The assay was designed to have the following reproducibility when using a 5day protocol in accordance with CLSI Document EP05-A3:

Concentration Interval	Reproducibility
$≤$ 0.80 Index	N/Aa
> 0.80 Index	$≤$ 20% CV

ª Not applicable.

Specimen Equivalency

The specimen equivalency study was determined with the weighted Deming regression model using the ADVIA Centaur XP in accordance with CLSI document EP09c-ed3.

This study was performed using 70 sets of matched samples of three matrixes (serum separator tube (SST), EDTA plasma and lithium heparin plasma) from commercial sources.

Samples were analyzed in one replicate in randomized order using one reagent lot.

Tube (y) vs. Serum (x)	Regression Equation	Sample Interval	Na	rb
Plasma, EDTA	$y=1.00x-0.03 Index$	0.12-12.35 Index	70	1.00
Plasma, lithium heparin	$y=1.00x-0.05 Index$	0.10-11.49 Index	70	1.00

a Number of samples tested.

b Correlation coefficient.

The results support that EDTA Plasma and Lithium Heparin Plasma are equivalent matrixes to Serum.

Interferences

Potential interference was evaluated using the ADVIA Centaur XP system in accordance with guidance from the CLSI documents EP07-ed3 and EP-37-ed1.

Three matrixes (serum, EDTA plasma and lithium heparin plasma) have been analyzed in this study. For each sample (nonreactive, low reactive and high reactive) and each interfering substance to test, two samples (Control and Test) were analyzed.

The acceptable difference with respect to the value reported for Control sample from the compounds listed below is ±10 % bias for reactive samples and ±0.10 Index for nonreactive samples.

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The following substances do not interfere with the assay in the different matrixes at the concentrations indicated below:

Substance	Substance Test Concentration
Hemoglobin	1000 mg/dL
Bilirubin, conjugated	40 mg/dL
Bilirubin, unconjugated	40 mg/dL
Lipemia (Intralipid)	1500 mg/dL
Biotin	3510 ng/mL
Cholesterol	502 mg/dL
Protein (hyperproteinemic)	15 g/dL
Protein (hypoproteinemic)	3 g/dL

Cross-reactivity

The ADVIA Centaur EBVM assay was evaluated for potential cross-reactivity with other viral antibodies and disease state specimens using the ADVIA Centaur system.

A total of 371 samples were analyzed with ADVIA Centaur EBV-VCA IgM on the ADVIA Centaur XP system and with an EBV VCA IgM comparative assay.

The data are summarized in the following table.

| Clinical Category | Number
Tested | ADVIA Centaur EBV-
VCA IgM Assay Results | | Comparative EBV-VCA IgM
Assay Results | | |
|------------------------------------------------------------------|------------------|---------------------------------------------|----------|------------------------------------------|-----------|----------|
| | | Nonreactive | Reactive | Negative | Equivocal | Positive |
| Cytomegalovirus (CMV)
IgG | 10 | 10 | 0 | 10 | 0 | 0 |
| Cytomegalovirus (CMV)
IgM | 10 | 7 | 3 | 7 | 0 | 3 |
| Parvovirus B19 IgM | 10 | 10 | 0 | 9 | 0 | 1 |
| Toxoplasma gondii IgG | 10 | 10 | 0 | 10 | 0 | 0 |
| Toxoplasma gondii IgM | 28 | 22 | 6 | 24 | 0 | 4 |
| Rubella IgG | 20 | 18 | 2 | 19 | 1 | 0 |
| Rubella IgM | 11 | 11 | 0 | 10 | 1 | 0 |
| Hepatitis B Virus (HBV)
IgM | 11 | 11 | 0 | 11 | 0 | 0 |
| Clinical Category | Number Tested | ADVIA Centaur EBV-VCA IgM Assay Results | | Comparative EBV-VCA IgM Assay Results | | |
| Hepatitis A Virus (HAV) IgM | 10 | 7 | 3 | 8 | 0 | 2 |
| Hepatitis C Virus (HCV) | 11 | 11 | 0 | 10 | 0 | 1 |
| Human Immunodeficiency Virus (HIV) | 10 | 9 | 1 | 9 | 0 | 1 |
| Herpes Simplex Virus (HSV-1) IgG | 11 | 11 | 0 | 11 | 0 | 0 |
| Herpes Simplex Virus (HSV-1) IgM | 10 | 10 | 0 | 10 | 0 | 0 |
| Herpes Simplex Virus (HSV-2) IgG | 12 | 12 | 0 | 12 | 0 | 0 |
| Herpes Simplex Virus (HSV-2) IgM | 11 | 9 | 2 | 10 | 0 | 1 |
| Treponema pallidum (Syphilis) | 11 | 11 | 0 | 11 | 0 | 0 |
| Varicella Zoster Virus (VZV) IgM | 10 | 9 | 1 | 10 | 0 | 0 |
| Measles virus IgM | 10 | 10 | 0 | 10 | 0 | 0 |
| Mumps virus IgM | 10 | 10 | 0 | 10 | 0 | 0 |
| Borrelia burgdorferi IgM (Lyme IgM) | 11 | 11 | 0 | 11 | 0 | 0 |
| Influenza virus IgM | 10 | 10 | 0 | 10 | 0 | 0 |
| Mycoplasma pneumoniae IgM | 18 | 15 | 3 | 16 | 0 | 2 |
| Antinuclear antibodies (ANA) | 10 | 10 | 0 | 10 | 0 | 0 |
| Rheumatic Factors (RF) | 11 | 10 | 1 | 11 | 0 | 0 |
| Human Anti-mouse antibodies (HAMA) | 10 | 10 | 0 | 10 | 0 | 0 |
| Human Herpes Virus (HHV6) | 14 | 14 | 0 | 14 | 0 | 0 |
| Systemic Lupus Erythematosus (SLE) | 10 | 10 | 0 | 10 | 0 | 0 |
| Flu vaccinated patients | 10 | 10 | 0 | 10 | 0 | 0 |
| Elevated IgG | 10 | 10 | 0 | 10 | 0 | 0 |
| Elevated IgM | 11 | 11 | 0 | 11 | 0 | 0 |
| Epstein Barr Virus (EBV) Viral Capsid Antigen (VCA) IgG | 10 | 10 | 0 | 10 | 0 | 0 |
| Epstein Barr Virus (EBV) Epstein-Barr Nuclear Antigen (EBNA) IgG | 10 | 9 | 1 | 9 | 0 | 1 |
| Total | 371 | 348 | 23 | 353 | 2 | 16 |

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10. Stability

The onboard stability of the ADVIA Centaur EBV-VCA IqM reagent is 28 days with a calibration interval of 28 days. The onboard stability of the ADVIA Centaur EBV-VCA IgM Calibrators is 8 hours. The opened vial stability of the ADVIA Centaur EBV-VCA IgM Calibrators is 60 days when stored at 2-8°C. Unopened reagents and calibrators are stable until the expiration date printed on the box label when stored at 2-8°C.

11. Conclusion

The analytical and clinical study results demonstrate that the ADVIA Centaur EBV-VCA IgM is substantially equivalent to the predicate device, LIAISON EBV IgM (FDA cleared under K040120).