(266 days)
The Clinical Innovations ROM Plus fetal membrane rupture test is a rapid, qualitative immunochromatographic test for the in vitro detection of amniotic fluid in vaginal secretions of pregnant women with signs and symptoms of ROM. The test detects AFP (alpha-fetoprotein) and PP12 (placental protein 12 or insulin growth factor binding protein) from amniotic fluid in vaginal secretion. The test is for prescription use by health care professionals to aid in the detection of rupture of membranes (ROM) in pregnant women in conjunction with other signs and symptoms.
The ROM Plus Quality Control Kit monitors the performance of the ROM Plus Fetal Membranes Rupture Test for the purposes of external quality control. The lyophilized human positive protein control is an assayed control material for qualitative testing.
The ROMPlus is a rapid test for detection of premature rupture of fetal membranes. The test principle is lateral flow immunochromatography. ROM Plus is available in packages of 5 tests. Each individual test pack contains a sterile polyester swab. specimen extraction buffer solution in a plastic vial and a cassette with integral timer containing the lateral flow strip packed in a foil pouch with desiccant.
The ROM Plus Controls contain one vial each of negative, and positive controls, with integral reconstitution solution.
Here's a breakdown of the acceptance criteria and the study details for the ROM Plus device, based on the provided 510(k) summary:
1. Table of Acceptance Criteria and Reported Device Performance
The 510(k) summary does not explicitly state pre-defined acceptance criteria in the form of target sensitivity, specificity, PPV, or NPV percentages. Instead, it presents the achieved performance in clinical studies for review. The reported performance is summarized below:
| Metric | Combined (All Gestational Ages) | ≥ 37 Weeks EGA | 34-37 Weeks EGA | < 34 Weeks EGA |
|---|---|---|---|---|
| Sensitivity | 0.99 (CI: 0.96 to 1.00) | 0.99 (CI: 0.96 to 1.00) | 1.00 (CI: 0.82 to 1.00) | 1.00 (CI: 0.72 to 1.00) |
| Specificity | 0.75 (CI: 0.66 to 0.82) | 0.58 (CI: 0.46 to 0.71) | 0.85 (CI: 0.64 to 0.95) | 0.94 (CI: 0.81 to 0.98) |
| PPV | 0.85 (CI: 0.79 to 0.90) | 0.84 (CI: 0.78 to 0.89) | 0.87 (CI: 0.65 to 0.95) | 0.83 (CI: 0.55 to 0.95) |
| NPV | 0.99 (CI: 0.94 to 1.00) | 0.97 (CI: 0.85 to 0.99) | - | - |
Note: NPV for 34-37 EGA and <34 EGA is not explicitly provided but can be calculated from the raw numbers if needed.
2. Sample Size and Data Provenance for the Test Set
- Sample Size (Test Set):
- Combined (all gestational ages): 264
- ≥ 37 weeks EGA: 182
- 34-37 weeks EGA: 37
- < 34 weeks EGA: 45
- Data Provenance: The study was a "multi-center prospective observational study." The country of origin is not explicitly stated, but the applicant (Clinical Innovations, LLC) is based in Murray, Utah, USA, suggesting the study likely took place in the USA. The data is prospective, as it's an "observational study" where "Clinicians performing ROM Plus testing were masked from the standard Clinical Assessment results."
3. Number of Experts and Their Qualifications for Ground Truth
The document does not explicitly state the "number of experts" or their specific "qualifications" involved in establishing the ground truth. It refers to "Clinicians performing ROM Plus testing were masked from the standard Clinical Assessment results." This implies that the standard clinical assessment was performed by healthcare professionals, though their specific expertise level (e.g., obstetrician with X years of experience) is not detailed.
4. Adjudication Method for the Test Set
The document does not describe a formal adjudication method (like 2+1 or 3+1). The ground truth for the test set was based on "the clinical standard of either leaking from cervical os, or pooling/ferning/nitrazine." It also states, "Corrections for ROM based on subsequent patient chart review was not used in this study for the detection of ruptured membranes," indicating that the initial clinical assessment was the definitive truth, without further adjudication by additional experts or by consulting patient chart outcomes later to resolve discrepancies.
5. Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study
No, a multi-reader multi-case (MRMC) comparative effectiveness study comparing human readers with AI assistance versus without AI assistance was not done. The ROM Plus device is a rapid diagnostic test intended for standalone use, providing a visual positive or negative result, rather than an AI interpretation tool for human readers.
6. Standalone Performance Study
Yes, a standalone performance study was conducted. The device's performance (sensitivity, specificity, PPV, NPV) was evaluated against the "clinical standard of either leaking from cervical os, or pooling/ferning/nitrazine" without human interpretation being factored into the device's result itself. The results presented in the table are for the ROM Plus device in isolation.
7. Type of Ground Truth Used
The ground truth used was based on clinical assessment, specifically "the clinical standard of either leaking from cervical os, or pooling/ferning/nitrazine." This is a combination of direct observation and established clinical tests.
8. Sample Size for the Training Set
The document does not specifically mention a "training set" or its sample size. This is common for rapid diagnostic devices, where the development process often involves internal R&D validation and optimization rather than a distinct "training set" for a machine learning model. The clinical study described in Section 7 served as the primary performance evaluation.
9. How the Ground Truth for the Training Set was Established
Since a specific "training set" is not detailed, the method for establishing its ground truth is also not described. For the clinical performance evaluation, as mentioned in point 7, the ground truth was established by "the clinical standard of either leaking from cervical os, or pooling/ferning/nitrazine." This method would have been used for any data utilized in the development and validation of the device.
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NOV 2 3 2011
510(k) Summary for the Clinical Innovations, LLC ROMPlus
- Applicant/Sponsor Clinical Innovations, LLC 747 W. 4170 S. Murray, Utah USA 84123 Contact Person: Wm. Dean Wallace, MD, PhD. Telephone: 801-268-8200 wdw@clinicalinnovations.com Date Prepared: November 7, 2011
2. Device Name
Proprietary Name: ROM Plus and ROM Plus Controls Common/Usual Name: Rupture Of Fetal Membranes (ROM) Rapid Diagnostic Test Classification Name: Urinary pH (Nonquantitative) Test System and Quality Control Material (Assayed and Unassayed)
3. Predicate Devices
AmniSure ROM (Rupture Of [fetal] Membranes) Test N-Dia, Inc .- K030849, K081767 Actim Prom and Controls Medix Biochemica -K061886 AmnioTest (pH swab) -K914419 AmniScreen (pH liner) - K071100
4. Device Description
The ROMPlus is a rapid test for detection of premature rupture of fetal membranes. The test principle is lateral flow immunochromatography. ROM Plus is available in packages of 5 tests. Each individual test pack contains a sterile polyester swab. specimen extraction buffer solution in a plastic vial and a cassette with integral timer containing the lateral flow strip packed in a foil pouch with desiccant.
The ROM Plus Controls contain one vial each of negative, and positive controls, with integral reconstitution solution.
Clinical Innovations, LLC 747 W. 4170 S. Murray, Utah USA 84123 5. Intended Use
The Clinical Innovations ROM Plus fetal membrane rupture test is a rapid, qualitative immunochromatographic test for the in vitro detection of amniotic fluid in vaginal secretions of pregnant women with signs and symptoms of ROM. The test detects AFP (alpha-fetoprotein) and PP12 (placental protein 12 or insulin growth factor binding protein) from amniotic fluid in vaginal secretion. The test is for prescription use by health care professionals to aid in the detection of rupture of membranes (ROM) in pregnant women in conjunction with other signs and symptoms.
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6. Technological Characteristics and Substantial Equivalence
The RQM Plus and the predicate devices cited above are both qualitative, lateral flow immunochromatographic assays intended to aid in detecting rupture of fetal membranes in pregnant women. Detection of results is by visual inspection. The analytes detected by ROM Plus and AmniSure and ActimPROM tests are similar amniotic fluid proteins. ROM Plus uses antibodies to PP12 (IGFBP-1) and AFP (alpha feto-protein). The specimen collection and extraction, test procedure, and reading and interpretation of results is similar between the three devices. All devices are intended for use in point-of-care and clinical laboratory settings. The differences between the ROM Plus and the predicate devices do not impact the safety or effectiveness of the proposed ROM Plus products for their intended uses.
7. Performance Testing
A series of nonclinical and clinical studies was conducted to assess the performance of the RQM Plus, These studies evaluated method comparison, repeatability, analytical sensitivity, analytical specificity and interfering substances.
- High Concentration ("High Dose Hook" effect) for the ROM Plus upper-detection . range, the PP12 and AFP were tested. Concentrations of PP12 were tested up to 400,000 ng/ml and AFP up to 200,000 ng/ml with positive visual results.
- For 100% of ROM Plus tests sampled, the lowest limit of detection (LOD) is 5 ne/ml for . PP12, and 150 ng/ml for AFP (these refer to concentrations in samples of vaginal secretions before dilution with the assay buffer).
- . Reproducibility was tested on different days at six levels of amniotic fluid spiked into a negative control. The assay was run on three lots of ROM Plus to determine the visual positive or negative results. Two low positives, two moderate positives and two high positives were run on three lots of ROM Plus on four different days. No difference in activity was observed.
- To determine interference and cross-reactivity of the assay, Tylenol, aspirin, and three . different bath products (Lever Soap, Noxzema cream, Pert Shampoo), were spiked into the low positive control at a final concentration of 0.1% without visual loss of activity. The same bath products were spiked into the negative-matrix control and shown to be negative. In addition, human semen, urine and blood were spiked into the low positive at a 10% final concentration without loss of activity. Human semen, urine and blood were also spiked into the negative-control matrix and shown to be negative. PP12 assay does not cross-react with IGFBP-2, IGFBP-3, and IGFBP-4 based on Western Blot results. ROM Plus was shown to be negative when tested with specimens that were positive for bacterial vaginosis and sexually transmitted diseases. All samples were pH>4.5.
A multi-center prospective observational study was performed. Clinicians performing ROM Plus testing were masked from the standard Clinical Assessment results. The clinical standard of either leaking from cervical os, or pooling/ferning/nitrazine were used.12,16 because these are commonly used in clinical hospital protocol to evaluate ROM. Corrections for ROM based on
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subsequent patient chart review was nos used in this study for the detection of ruptured membranes.
Results are shown below:
| Combined | Clin-Assess | positive | negative | ≥ 37 | Clin-Assess | positive | negative |
|---|---|---|---|---|---|---|---|
| ROM Plus | positive | 153 | 28 | ROM Plus | positive | 125 | 23 |
| negative | 1 | 82 | negative | 1 | 33 | ||
| Total: 264 | Total: 182 | ||||||
| Sens | 0.99 | CI: 0.96 to 1.00 | Sens | 0.99 | CI: 0.96 to 1.00 | ||
| Spec | 0.75 | CI: 0.66 to 0.82 | Spec | 0.58 | CI: 0.46 to 0.71 | ||
| PPV | 0.85 | CI: 0.79 to 0.90 | PPV | 0.84 | CI: 0.78 to 0.89 | ||
| NPV | 0.99 | CI: 0.94 to 1.00 | NPV | 0.97 | CI: 0.85 to 0.99 | ||
| 34-37 EGA | Clin-Assess | positive | negative | < 34 | Clin-Assess | positive | negative |
| ROM Plus | positive | 18 | 3 | ROM Plus | positive | 10 | 2 |
| negative | 0 | 16 | negative | 0 | 33 | ||
| Total: 37 | Total: 45 | ||||||
| Sens | 1.00 | CI: 0.82 to 1.00 | Sens | 1.00 | CI: 0.72 to 1.00 | ||
| Spec | 0.85 | CI: 0.64 to 0.95 | Spec | 0.94 | CI: 0.81 to 0.98 | ||
| PPV | 0.87 | CI: 0.65 to 0.95 | PPV | 0.83 | CI: 0.55 to 0.95 |
Table 1 : Clinical Study - ROM Plus vs. Clinical Assessment (pooling/ferning/nitrazine)
The results of all studies demonstrated that the ROM Plus Controls performed according to their specifications.
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Food and Drug Administration 10903 New Hampshire Avenue Silver Spring, MD 20993
Clinical Innovations c/o Dr. Wm. Dean Wallace 747 W 4170 South Murray, UT 84123
NOV 2 3 2011
K110605 Re:
Trade Name: ROM Plus Fetal Membranes Rupture Test Regulation Number: 21 CFR 862.1550 Regulation Name: Urinary pH Regulatory Class: Class I, reserved Product Codes: NQM, JJX Dated: November 14, 2011 Received: November 14, 2011
Dear Dr. Wallace:
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 forcrences above and in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device merslate conmise or proces that have been reclassified in accordance with the provisions of Amendinents, or to de rices that nations of the do not require approval of a premarket the Federal 7 000, Drag, and Coou may, therefore, market the device, subject to the general approvisions of the Act. The general controls provisions of the Act include controls pro ristions of annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such additional controls. Existing major regulations affecting (1 Writ), it may of subject to water 21, Code of Federal Regulations (CFR), Parts 800 to 895. your device ban or load of to ther 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 moan that I DAT has mass statutes and regulations administered by other Federal agencies. of the Act of any I oderal statules and equirements, including, but not limited to: registration 1 ou must compty with an eas; labeling (21 CFR Parts 801 and 809); medical device alle fisting (21 OF N F art 807), as seen ( reporting (reporting of mounts as set forth in the quality systems (QS) regulation (21 CFR Part 820).
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Page 2 -
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of In Viro Diagnostic Device Evaluation and Safety at (301) 796-5450. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding postmarket surveillance, please contact CDRH's Office of Surveillance and Biometric's (OSB's) Division of Postmarket Surveillance at (301) 796-5760. 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 ) 796-5680 or at its Internet address http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
jz
Courtney H. Lias, Ph.D. Director Division of Chemistry and Toxicology Office of In Vitro Diagnostic Device Evaluation and Safety Center for Devices and Radiological Health
Enclosure
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Indications for Use
K110605 510(k) Number:
Device Name: ROM Plus Fetal Membranes Rupture Test
Indications for Use:
The Clinical Innovations ROM Plus fetal membrane rupture test is a rapid, qualitative immunochromatographic test for the in-vitro detection of amniotic fluid in vaginal secretions of pregnant women with signs and symptoms of ROM. The test detects AFP (alpha-fetoprotein) and PP12 (placental protein 12 or insulin growth factor binding protein) from amniotic fluid in vaginal secretion. The test is for prescription use by health care professionals to aid in the detection of rupture of membranes (ROM) in pregnant women in conjunction with other signs and symptoms.
The ROM Plus Quality Control Kit monitors the performance of the ROM Plus Fetal Membranes Rupture Test for the purposes of external quality control. The lyophilized human positive protein control is an assayed control material for qualitative testing.
Prescription Use X (Part 21 CFR 801 Subpart D) AND/OR
Over-The-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (OIVD)
Signature
Division Sign-Off Office of In Vitro Diagnostic Device Evaluation and Safety
510(k) C-110605
§ 862.1550 Urinary pH (nonquantitative) test system.
(a)
Identification. A urinary pH (nonquantitative) test system is a device intended to estimate the pH of urine. Estimations of pH are used to evaluate the acidity or alkalinity of urine as it relates to numerous renal and metabolic disorders and in the monitoring of patients with certain diets.(b)
Classification. Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to § 862.9.