K Number
K132515
Device Name
LIAISON N-TACT PTH GEN II, CONTROL SET, CALIBRATION VERIFIERS
Manufacturer
Date Cleared
2013-11-08

(88 days)

Product Code
Regulation Number
862.1545
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP Authorized
Intended Use
The LIAISON® N-TACT® PTH Gen II is an in vitro chemiluminescent immunoassay (CLIA) intended for the quantitative determination of intact human parathyroid hormone in serum, EDTA and Lithium Heparin plasma samples. Measurements of parathyroid hormone levels are used in the differential diagnosis of hypercalcemia and hypocalcemia resulting from disorders of calcium metabolism. The test is to be performed on the LIAISON® XL Analyzer. The LIAISON® N-TACT® PTH Gen II Control Set is intended for use as assayed quality control samples to monitor the accuracy and precision of the DiaSorin LIAISON® N-TACT® PTH Gen II assay. The LIAISON® N-TACT® PTH Gen II Calibration Verifiers are assayed quality control materials intended for the quantitative verification of calibration and reportable range of the LIAISON® N-TACT® PTH Gen II assay.
Device Description
The LIAISON® N-TACT® PTH Gen II assay is a modified two-step, two-site sandwich assay that uses two goat polyclonal antibodies for capture and detection of intact PTH. Results are determined by a 2 point calibration conversion of the master curve to a working curve. The light signal is measured by a photomultiplier as relative light units (RLU) and is proportional to the concentration of intact PTH present in the calibrators, controls or samples. LIAISON® N-TACT® PTH Gen II Control set contains: 2 levels controls containing 80% human plasma spiked with 1-84 PTH, and preservatives; 4 vials each level; lyophilized The target concentration for control level 1 is 20 pg/mL. The target concentration for control Level 2 is 300 pg/mL. The range of concentrations of each control is reported on the certificate of analysis provided with each LIAISON® N-TACT® PTH Gen II Control set. LIAISON® N-TACT® PTH Gen II Calibration Verifier set contains: 4 levels containing 80% human plasma spiked with 1-84 PTH, with preservative, . 1 vial each level, lyophilized The target concentration for cal verifier A is 10 pg/mL. The target concentration for cal verifier B is 150 pg/mL. The target concentration for cal verifier C is 650 pg/mL. The target concentration for cal verifier D is 1600 pg/mL. The range of concentrations of each calibration verifier is reported on the certificate of analysis provided with each LIAISON® N-TACT® PTH Gen II Calibration Verifier set.
More Information

Not Found

No
The summary describes a standard immunoassay with a two-point calibration and measurement of relative light units. There is no mention of AI or ML in the device description, intended use, or performance studies.

No.
This device is an in vitro diagnostic (IVD) assay designed to quantitatively measure parathyroid hormone levels, which are used for diagnosis, not direct treatment, of medical conditions.

Yes

Explanation: The "Intended Use / Indications for Use" section states that measurements of parathyroid hormone levels are "used in the differential diagnosis of hypercalcemia and hypocalcemia resulting from disorders of calcium metabolism." This indicates that the device aids in identifying or distinguishing diseases, which is the definition of a diagnostic device.

No

The device is an in vitro diagnostic (IVD) assay kit, including reagents and controls, intended for use on a specific hardware analyzer (LIAISON® XL Analyzer). It is not a software-only device.

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

Here's why:

  • Intended Use: The "Intended Use / Indications for Use" section explicitly states that the LIAISON® N-TACT® PTH Gen II is an "in vitro chemiluminescent immunoassay (CLIA) intended for the quantitative determination of intact human parathyroid hormone in serum, EDTA and Lithium Heparin plasma samples." The phrase "in vitro" is a key indicator of an IVD.
  • Purpose: The assay is used for the "differential diagnosis of hypercalcemia and hypocalcemia resulting from disorders of calcium metabolism." This indicates that the test is performed on samples taken from the human body to provide information for diagnostic purposes.
  • Sample Types: The assay uses biological samples (serum, EDTA and Lithium Heparin plasma), which are typical for in vitro diagnostic tests.
  • Controls and Calibrators: The description of the Control Set and Calibration Verifiers further supports its IVD nature, as these are essential components for ensuring the accuracy and reliability of an in vitro diagnostic assay.
  • Performance Studies: The "Summary of Performance Studies" describes various analytical performance characteristics (Method Comparison, Sample Matrix Comparison, Precision, Linearity, etc.) that are typically evaluated for IVD devices to demonstrate their suitability for clinical use.
  • Predicate Devices: The listing of predicate devices (K020217, K033426, K093498) which are also IVDs, indicates that this device is being compared to existing IVD products.

All these elements align with the definition and characteristics of an In Vitro Diagnostic device.

N/A

Intended Use / Indications for Use

The LIAISON® N-TACT® PTH Gen II is an in vitro chemiluminescent immunoassay (CLIA) intended for the quantitative determination of intact human parathyroid hormone in serum, EDTA and Lithium Heparin plasma samples. Measurements of parathyroid hormone levels are used in the differential diagnosis of hypercalcemia and hypocalcemia resulting from disorders of calcium metabolism. The test is to be performed on the LIAISON® XL Analyzer.

The LIAISON® N-TACT® PTH Gen II Control Set is intended for use as assayed quality control samples to monitor the accuracy and precision of the DiaSorin LIAISON® N-TACT® PTH Gen II assay.

The LIAISON® N-TACT® PTH Gen II Calibration Verifiers are assayed quality control materials intended for the quantitative verification of calibration and reportable range of the LIAISON® N-TACT® PTH Gen II assay.

Product codes

CEW, JJX

Device Description

The LIAISON® N-TACT® PTH Gen II assay is a modified two-step, two-site sandwich assay that uses two goat polyclonal antibodies for capture and detection of intact PTH. Results are determined by a 2 point calibration conversion of the master curve to a working curve. The light signal is measured by a photomultiplier as relative light units (RLU) and is proportional to the concentration of intact PTH present in the calibrators, controls or samples.

LIAISON® N-TACT® PTH Gen II Control set contains:
. 2 levels controls containing 80% human plasma spiked with 1-84 PTH, and preservatives; 4 vials each level; lyophilized
The target concentration for control level 1 is 20 pg/mL. The target concentration for control Level 2 is 300 pg/mL.

The range of concentrations of each control is reported on the certificate of analysis provided with each LIAISON® N-TACT® PTH Gen II Control set.

LIAISON® N-TACT® PTH Gen II Calibration Verifier set contains:
4 levels containing 80% human plasma spiked with 1-84 PTH, with preservative, . 1 vial each level, lyophilized
The target concentration for cal verifier A is 10 pg/mL. The target concentration for cal verifier B is 150 pg/mL. The target concentration for cal verifier C is 650 pg/mL. The target concentration for cal verifier D is 1600 pg/mL.

The range of concentrations of each calibration verifier is reported on the certificate of analysis provided with each LIAISON® N-TACT® PTH Gen II Calibration Verifier set.

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

Not Found

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

Not Found

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

Method Comparison: 198 samples were tested with the LIAISON® N-TACT® PTH Gen II and the predicate Siemens ADVIA Centaur® Intact PTH (iPTH) using Passing & Bablok linear regression. Slope was 1.010 (95% CI: 0.99 to 1.03), Intercept was -1.5851 (95% CI: -3.11 to -0.44), Correlation coefficient (r) was 0.9953.

Sample Matrix Comparison: Sixty-five (65) matched patient sets of EDTA plasma, serum, SST serum, and Lithium Heparin plasma samples were tested.
EDTA plasma vs. Serum: Slope 0.97, R2 0.9986
EDTA plasma vs. SST Serum: Slope 1.01, R2 0.9996
EDTA plasma vs. Lithium Heparin: Slope 0.98, R2 0.9991

Reference Range: EDTA plasma samples from 125 apparently healthy adults aged 21 - 70 years. Observed Range 2.5th to 97.5th Percentile: 14.5 - 87.1 pg/mL.

Precision: Precision testing performed following CLSI Guideline EP5-A2 using 7 frozen EDTA plasma samples and 2 lots of controls over 20 operating days (160 replicate results per sample). Results summarized for mean PTH concentration, standard deviations and %CV for between lot and total across lots.

Linearity: One sample pool of each type (serum, SST serum, EDTA plasma, Lithium Heparin plasma) was diluted and analyzed.
Serum: Observed PTH = 0.9767x - 3.624; R2 = 0.9982
SST Serum: Observed PTH = 0.9742x + 3.856; R2 = 0.9987
EDTA plasma: Observed PTH = 1.012x ~ 4.127; R2 = 0.9983
Lithium Heparin plasma: Observed PTH = 0.9461x + 3.696; R2 = 0.9992

High Dose Hook Effect: No hook effect was observed up to 1,000,000 pg/mL of PTH.

Recovery Study: Five high and five low concentration EDTA plasma samples were mixed and tested. Mean Recovery was 97%.

Analytical Specificity/Cross-Reactivity Studies: PTH (7-84) showed 53% cross-reactivity at 1200 pg/mL. Other PTH fragments, Calcitonin, C-Telopeptide, and Osteocalcin showed =±10%) observed for listed endogenous (Hemoglobin, Bilirubin, Triglycerides, Cholesterol, Albumin, Rheumatoid Factor, HAMA) and exogenous (Acetaminophen, Acetylsalicylic Acid, Salicylic Acid, Ibuprofen, Alendronate, Etidronate, Pamidronate, Risedronate, Vitamin D2, Vitamin D3, Calcitriol, Alfacalcidol, Biotin, Calcium Acetate, Calcium Citrate, Magnesium Chloride, Aluminum Sulfate, Lanthanum Chloride) substances at specified concentrations.

Limit of Blank (LoB):

§ 862.1545 Parathyroid hormone test system.

(a)
Identification. A parathyroid hormone test system is a device intended to measure the levels of parathyroid hormone in serum and plasma. Measurements of parathyroid hormone levels are used in the differential diagnosis of hypercalcemia (abnormally high levels of calcium in the blood) and hypocalcemia (abnormally low levels of calcium in the blood) resulting from disorders of calcium metabolism.(b)
Classification. Class II.

0

510(k) Summary

LIAISON® N-TACT® PTH Gen II LIAISON® N-TACT® PTH Gen II Control Set LIAISON® N-TACT® PTH Gen II Calibration Verifiers

This summary of 510(k) safety and effectiveness information is submitted in accordance with the requirements of SMDA 1990 and 21 CFR 807.92

1. 510{k} Number: K132515

    1. Applicant: Carol A. DePouw
      DiaSorin Inc. 1951 Northwestern Avenue, P.O. Box 285, Stillwater, MN 55082-0285 Office Number: 651-351-5850; Fax Number: 651-351-5669 Email: carol.depouw@diasorin.com

3. Date: September 4, 2013

4. Proprietary and Established Names:

LIAISON® N-TACT® PTH Gen II LIAISON® N-TACT® PTH Gen II Control Set LIAISON® N-TACT® PTH Gen II Calibration Verifiers

NOV 0 8 2013

5. Regulatory Information:

LIAISON® N-TACT® PTH Gen II

Regulation Section: 21 CFR 862.1545 Classification: Class II Product Code: CEW Panel: Clinical Chemistry (75)

LIAISON® N-TACT® PTH Gen II Control Set LIAISON® N-TACT® PTH Gen II Calibration Verifiers

Regulation Section: 21 CFR 862.1660 Classification: Class I, reserved Product Code: JJX Panel: Clinical Chemistry (75)

6. Predicate Devices:

The predicate device used to demonstrate substantial equivalence to the LIAISON® N-TACT® PTH Gen II is the Siemens ADVIA® CENTAUR INTACT Parathyroid Hormone (iPTH) Assay previously cleared under K020217.

1

The predicate device used to demonstrate substantial equivalence to the LIAISON® N-TACT® PTH Gen II Control Set is the LIAISON® N-TACT® PTH Control Set previously cleared under K033426.

The predicate device used to demonstrate substantial equivalence to the LIAISON® N-TACT® PTH Gen II Calibration Verifiers is the LIAISON® N-TACT® PTH Calibration Verifiers previously cleared under K093498.

7. Device Description:

ﻤﺪ 1

The LIAISON® N-TACT® PTH Gen II assay is a modified two-step, two-site sandwich assay that uses two goat polyclonal antibodies for capture and detection of intact PTH. Results are determined by a 2 point calibration conversion of the master curve to a working curve. The light signal is measured by a photomultiplier as relative light units (RLU) and is proportional to the concentration of intact PTH present in the calibrators, controls or samples.

LIAISON® N-TACT® PTH Gen II Control set contains:

  • . 2 levels controls containing 80% human plasma spiked with 1-84 PTH, and preservatives; 4 vials each level; lyophilized
    The target concentration for control level 1 is 20 pg/mL. The target concentration for control Level 2 is 300 pg/mL.

The range of concentrations of each control is reported on the certificate of analysis provided with each LIAISON® N-TACT® PTH Gen II Control set.

LIAISON® N-TACT® PTH Gen II Calibration Verifier set contains:

  • 4 levels containing 80% human plasma spiked with 1-84 PTH, with preservative, . 1 vial each level, lyophilized
    The target concentration for cal verifier A is 10 pg/mL. The target concentration for cal verifier B is 150 pg/mL. The target concentration for cal verifier C is 650 pg/mL. The target concentration for cal verifier D is 1600 pg/mL.

The range of concentrations of each calibration verifier is reported on the certificate of analysis provided with each LIAISON® N-TACT® PTH Gen II Calibration Verifier set.

8. Intended Use:

The LIAISON® N-TACT® PTH Gen II is an in vitro chemiluminescent immunoassay (CLIA) intended for the quantitative determination of intact human parathyroid hormone in serum, EDTA and Lithium Heparin plasma samples. Measurements of parathyroid hormone levels are used in the differential diagnosis of hypercalcemia and hypocalcemia resulting from disorders of calcium metabolism.

The test is to be performed on the LIAISON® XL Analyzer.

2

The LIAISON® N-TACT® PTH Gen II Control Set is intended for use as assayed quality control samples to monitor the accuracy and precision of the DiaSorin LIAISON® N-TACT® PTH Gen II assay.

The LIAISON® N-TACT® PTH Gen II Calibration Verifiers are assayed quality control materials intended for the quantitative verification of calibration and reportable range of the LIAISON® N-TACT® PTH Gen II assay.

9. Indication(s) for Use:

Same as Intended Use

10. Substantial Equivalence Information:

Both the LIAISON® N-TACT® PTH Gen II and the predicate Siemens ADVIA CENTAUR® INTACT Parathyroid Hormone (iPTH) Assay are prepackaged reagents for use on automated clinical chemistry analyzers. A comparison of the similarities and differences between the devices are provided in the following table:

| Characteristic | Candidate Device
LIAISON® N-TACT® PTH Gen II | Predicate Device
ADVIA Centaur iPTH (K020217) |
|-----------------------------|--------------------------------------------------------------------------------|--------------------------------------------------------------------------|
| Intended Use | For in vitro quantitative determination
of intact human parathyroid hormone | For in vitro quantitative determination
of intact parathyroid hormone |
| Measured Analyte | Intact Parathyroid Hormone | Intact Parathyroid Hormone |
| Calibration | Two-point calibration | Two-point calibration |
| Antibody | Goat polyclonal | Goat polyclonal |
| Reagent Storage | On-board or in refrigerator @ 2-8°C | On-board or in refrigerator @ 2-8°C |
| Measuring range | 3 - 1900 pg/mL | 2.5 - 1900 pg/mL |
| Sample Matrix | EDTA Plasma, Serum, SST serum
and Lithium Heparin plasma | EDTA Plasma and Serum |
| Sample size | 150 µL | 200 µL |
| Open storage
on analyzer | 56 days | 28 days |
| Calibration interval | 28 days | 14 days |
| Calibrators | 2 levels - Included with kit | 2 Levels - Not included with kit |
| Manufacturers | 2 levels | 3 levels |
| Controls | | |
| Reference range | 14.5 - 87.1 pg/mL | 11.1 - 79.5 pg/mL |

3

Control Similarities and Differences
CharacteristicCandidate Device
LIAISON® N-TACT® PTH Gen II
Control SetPredicate Device
LIAISON® N-TACT® PTH
Control Set (K033426)
Intended Useintended for use as assayed quality
control samples to monitor the
accuracy and precision of the
LIAISON® N-TACT® PTH Gen IIintended for use as assayed quality
control samples to monitor the
accuracy and precision of the
LIAISON® N-TACT® PTH
StorageStore at 2-8°C until ready to useSame
Levels2 levels: lyophilized
Level 1 (approx 20 pg/mL)
Level 2 (approx 300 pg/mL)2 levels: lyophilized
Level 1 (approx 60 pg/mL)
Level 2 (approx 560 pg/mL)
Calibration Verifiers Similarities and Differences
CharacteristicCandidate Device
LIAISON® N-TACT® PTH Gen II
Calibration VerifiersPredicate Device
LIAISON® N-TACT® PTH
Calibration Verifiers (K093498)
Intended Useassayed quality control materials
intended for the quantitative
verification of calibration and
reportable range of the LIAISON®
N-TACT® PTH Gen IIassayed quality control materials
intended for the quantitative
verification of calibration and
reportable range of the LIAISON®
N-TACT® PTH
Storage2 to 8°CSame
Levels4 levels; lyophilized
Cal Ver A (approx 10 pg/mL)
Cal Ver B (approx 150 pg/mL)
Cal Ver C (approx 650 pg/mL)
Cal Ver D (approx 1600 pg/mL)4 levels; lyophilized
Cal Ver A (approx 20 pg/mL)
Cal Ver B (approx 150 pg/mL)
Cal Ver C (approx 350 pg/mL)
Cal Ver D (approx 1500 pg/mL)
Volume2.0 mLsSame

11. Standard/guidance Document Reference:

  • CLSI Guideline EP5-A2, Evaluation of Precision Performance of Quantitative Measurement Methods;
  • CLSI Guideline EP6-A, Evaluation of Linearity of Quantitative Analytical Methods; o
  • CLSI Guideline EP7-A2, Interference Testing in Clinical Chemistry, o
  • CLSI Guideline EP9-A2-IR, Method Comparison and Bias Estimation Using O Patient Samples:
  • CLSI Guideline EP17-A2 Evaluation of Detection Capability for Clinical o Laboratory Measurement Procedures;
  • CLSI Guideline C28-A3, Defining, Establishing and Verifying Reference Intervals o in the Clinical Laboratory.

12. Performance Characters:

Method Comparison

A method comparison study was performed following CLSI EP9-A2, individual results for the Siemens ADVIA Centaur® Intact PTH (iPTH) and the LIAISON® N-TACT® PTH

4

Gen II were plotted. Passing & Bablok linear regression analyses were performed and gave the following results:

Passing & Bablok Fit
nSlope95% CIIntercept
pg/mL95% CICorrelation
coefficient (r)
1981.0100.99 to 1.03-1.5851-3.11 to -0.440.9953

Sample Matrix Comparison

Sixty-five (65) matched patient sets of EDTA plasma, serum, SST serum, and Lithium Heparin plasma samples were tested to determine if these sample types provide equivalent results on the LIAISON® N-TACT® PTH Gen II assay. The following Passing & Bablok linear regression results were obtained:

| EDTA plasma vs. | Slope | 95% CI | Intercept
pg/mL | 95% CI | R2 |
|-----------------|-------|--------------|--------------------|----------------|--------|
| Serum | 0.97 | 0.94 to 1.0 | -2.45 | -4.05 to -1.51 | 0.9986 |
| SST Serum | 1.01 | 0.99 to 1.03 | -2.25 | -3.10 to -1.44 | 0.9996 |
| Lithium Heparin | 0.98 | 0.97 to 1.01 | -0.01 | -1.05 to 0.74 | 0.9991 |

Reference Range

EDTA plasma samples from125 apparently healthy adults aged 21 - 70 years of age from mixed ethnic backgrounds (32.5% dark -skinned, 66.7% light-skinned and 0.8% unknown) with normal Total Calcium, TSH, Phosphorus, Magnesium, Creatinine, Alkaline Phosphatase and 25 OH Vitamin D values from the northern and southern regions of the U.S.

LIAISON® N-TACT® PTH Gen II Reference Range

| Population(n =125) | Median
PTH (pg/mL) | Observed Range
2.5th to 97.5th Percentile |
|--------------------|-----------------------|----------------------------------------------|
| United States | 34.00 | 14.5 - 87.1 pg/mL |

Precision

Precision testing was performed following CLSI Guideline EP5-A2. Evaluation of Precision Performance of Quantitative Measurement Methods; Approved Guideline -Second Edition. A coded panel comprised of 7 frozen EDTA plasma samples spanning the assay range and 2 lots of LIAISON® N-TACT® PTH Gen II controls (2 levels) were fested in the study. The precision panel samples and kit controls were tested on two lots of LIAISON® N-TACT® PTH Gen II in two replicates per run, 2 runs per day for 20 operating days for a total of 160 replicate results per sample. The 20 day results are summarized for the combined reagent lot numbers as sample mean PTH concentration in pg/mL, standard deviations and coefficient of variation (%CV) for between lot and Total across lots.

5

| | | Mean
PTH
(pg/mL) | Between-Lot | | Total
(Across Lots) | |
|---------------------------|-----|------------------------|-------------|------|------------------------|------|
| Sample ID | n | | SD | %CV | SD | %CV |
| Lot 1 Kit Control Level 1 | 160 | 19.3 | 0.26 | 1.3% | 0.65 | 3.3% |
| Lot 1 Kit Control Level 2 | 160 | 250 | 9.27 | 3.7% | 8.84 | 3.5% |
| Lot 2 Kit Control Level 1 | 160 | 18.5 | 0.28 | 1.5% | 0.57 | 3.1% |
| Lot 2 Kit Control Level 2 | 160 | 252 | 10.59 | 4.2% | 9.05 | 3.6% |
| EDTA Plasma 1 | 160 | 12.6 | 0.23 | 1.8% | 0.53 | 4.2% |
| EDTA Plasma 2 | 160 | 34.5 | 0.70 | 2.0% | 1.38 | 4.0% |
| EDTA Plasma 3 | 160 | 86.2 | 1.68 | 1.9% | 3.07 | 3.6% |
| EDTA Plasma 4 | 160 | 156.1 | 5.25 | 3.4% | 5.54 | 3.5% |
| EDTA Plasma 5 | 160 | 605 | 24.62 | 4.1% | 19.37 | 3.2% |
| EDTA Plasma 6 | 160 | 1348 | 46.58 | 3.5% | 44.06 | 3.3% |
| EDTA Plasma 7 | 160 | 1477 | 84.06 | 5.7% | 40.62 | 2.8% |

Linearity

One sample pool of each type; serum, SST serum, EDTA plasma and Lithium Heparin plasma were diluted and analyzed by the LIAISON® N-TACT® PTH Gen II assay following CLSI EP6-A. The results were analyzed by a weighed Deming regression of Observed PTH Concentration versus Expected PTH Concentration.

The resulting equations for each sample types are: Serum: Observed PTH = 0.9767x - 3.624; R2 = 0.9982 SST Serum: Observed PTH = 0.9742x + 3.856; R2 = 0.9987 EDTA plasma: Observed PTH = 1.012x ~ 4.127; R2 = 0.9983 Lithium Heparin plasma: Observed PTH = 0.9461x + 3.696; R2 = 0.9992

High Dose Hook Effect

Testing was conducted to determine if the LIAISON® N-TACT® PTH Gen II assay is susceptible to artificially low results in the presence of very high levels of PTH (Hook Effect). A zero sample was spiked with enough 1-84 PTH to equal concentrations above the assay measuring range of 1900 pg/mL.

No hook effect was observed up to 1,000,000 pg/mL of PTH.

Recovery Study

Five (5) high concentration EDTA plasma samples and 5 low concentration samples EDTA plasma samples were analyzed neat on the LIAISON® N-TACT® PTH Gen II assay. Recovery samples were then prepared by mixing defined ratios of the high and low samples and tested in replicates of 5. The observed values were compared to the expected values to determine the % recovery.

6

DefinedExpectedObserved% Recovery
High Sample 1 (HS1)999
2 HS1 : 1 LS169567497%
1 HS1 : 1 LS153952397%
1 HS1 : 2 LS138335893%
Low Sample 1 (LS1)79.8
High Sample 2 (HS2)1416
2 HS2 : 1 LS2100399299%
1 HS2 : 1 LS2790794100%
1 HS2 : 2 LS2577590102%
Low Sample 2 (LS2)164
High Sample 3 (HS3)696
2 HS3 : 1 LS3479495103%
1 HS3 : 1 LS3367369101%
1 HS3 : 2 LS325523793%
Low Sample 3 (LS3)37.7
High Sample 4 (HS4)1630
2 HS4 : 1 LS41174111895%
1 HS4 : 1 LS493990696%
1 HS4 : 2 LS470466895%
Low Sample 4 (LS4)248
High Sample 5 (HS5)46.4
2 HS5 : 1 LS532.630.393%
1 HS5 : 1 LS525.523.893%
1 HS5 : 2 LS518.418.4100%
Low Sample 5 (LS5)4.7
Mean Recovery97%

Analytical Specificity

.

Cross-Reactivity Studies

CLSI Guideline EP7-A2, Interference Testing in Clinical Chemistry; Approved Guideline; Second Edition.

Controlled studies of potentially cross-reacting substances were performed on the LIAISON® N-TACT® PTH Gen II assay at the concentrations listed below.

| Cross-Reactant | Spiked
Concentration | % Cross
Reactivity |
|-----------------------------|-------------------------|-----------------------|
| PTH (7 - 84) | 1200 pg/mL | 53% |
| PTH (1 - 34) | 200,000 pg/mL | 20993-0002

November 8, 2013

DiaSorin Inc. Ms. Carol A. DePouw 1951 Northwestern Ave. P.O. Box 285 STILLWATER MN 55082-0285

Re: K132515

Trade/Device Name: LIAISON N-TACT PTH Gen II. LIAISON N-TACT PTH Gen II Control Set. LIAISON N-TACT PTH Gen II Calibration Verifiers Regulation Number: 21 CFR 862.1545 Regulation Name: Parathyroid hormone test system Regulatory Class: II Product Code: CEW. JJX Dated: October 23, 2013 Received: October 25, 2013

Dear Ms. DePouw:

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 (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. The general controls provisions of the Act include requirements for annual registration. Ilisting of devices, good manufacturing practice. labeling, and prohibitions against misbranding and adulteration. Please note: CDRH docs 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.

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 Parts 801 and 809): medical device reporting (reporting of medical device-related adverse events) (21 CFR 803): good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable. the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.

10

Page 2-Ms. DePouw

If you desire specific advice for your device on our labeling regulations (21 CFR Parts 801 and 809), please contact the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638 2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to

http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.

You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.

Sincerely yours.

Carol C. Benson -S for

Courtney H. Lias, Ph.D. Director Division of Chemistry and Toxicology Devices Office of In Vitro Diagnostics and Radiological Health Center for Devices and Radiological Health

Enclosure

11

DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration

Indications for Use

Form Approved: OMB No. 0910-0120 Expiration Date: December 31, 2013 See PRA Statement on last page.

510{k) Number (if known)

K132515

Device Name

LIAISON® N-TACT® PTH Gen II LIAISON® N-TACT® PTH Gen II Control Set LIAISON® N-TACT® PTH Gen II Calibration Verifiers

Indications for Use (Describe)

The LIAISON® N-TACT® PTH Gen II is an in vitro chemiluminescent immunoassay (CLIA) intended for the quantitative determination of intact human parathyroid hormone in serum, EDTA and Lithium Heparin plasma samples. Measurements of parathyroid hormone levels are used in the differential diagnosis of hypercalcemia and hypocalcemia resulting from disorders of calcium metabolism. The test is to be performed on the LIAISON XL analyzer.

The LIAISON® N-TACT® PTH Gen II Control Set is intended for use as assayed quality control samples to monitor the accuracy and precision of the DiaSorin LIAISON® N-TACT® PTH Gen II assay.

The LIAISON® N-TACT® PTH Gen II Calibration Verifiers are assayed quality control materials intended for the quantitative verification of calibration and reportable range of the LIAISON® N-TACT® PTH Gen II assay.

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

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

(Prescription Use (Part 21 CFR 801 Subpart D)

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Concurrence of Center for Devices and Radiological Health (CDRH) (Signature)

Yung W. Chan -S