MDI RF TEST

K993843 · Micro Detect, Inc. · DHR · Jan 11, 2000 · Immunology

Device Facts

• Record ID: K993843
• Device Name: MDI RF TEST
• Applicant: Micro Detect, Inc.
• Product Code: DHR · Immunology
• Decision Date: Jan 11, 2000
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 866.5775
• Device Class: Class 2

Indications for Use

The MDI RF Test is a semi quantitative Enzyme Immunoassay (EIA) Kit for the detection of IgM antibodies against human IgG (RF) in human serum. The test is intended as an aid in the diagnosis of rheumatoid arthritis. FOR IN VITRO DIAGNOSTIC USE ONLY.

Device Story

MDI RF Test is a manual microplate ELISA kit for semi-quantitative detection of IgM rheumatoid factor (RF) antibodies in human serum. Kit components include antigen-coated microplate, controls, wash buffer, sample diluent, conjugate, substrate, and stop solution. Used in clinical laboratory settings by trained personnel. Procedure involves manual processing of serum samples; results aid clinicians in diagnosing rheumatoid arthritis. Performance metrics include 95.2% relative sensitivity and 100% relative specificity compared to predicate assays.

Clinical Evidence

Bench testing only. Performance evaluated against predicate assays. Reported relative sensitivity: 95.2%; relative specificity: 100%. Precision (CV): 1.44-3.62% (intra-assay) and 1.9-5.15% (inter-assay). Stability validated for one year at 2-8°C based on accelerated stress testing (47.5°C) and 10 weeks of real-time monitoring.

Technological Characteristics

Manual microplate ELISA (Enzyme Immunoassay). Components: antigen-coated microplate, controls, wash buffer, sample diluent, conjugate, substrate, stop solution. Storage: 2-8°C. Shelf life: 1 year.

Indications for Use

Indicated for the semi-quantitative detection of IgM antibodies against human IgG (RF) in human serum as an aid in the diagnosis of rheumatoid arthritis.

Regulatory Classification

Identification

A rheumatoid factor immunological test system is a device that consists of the reagents used to measure by immunochemical techniques the rheumatoid factor (antibodies to immunoglobulins) in serum, other body fluids, and tissues. Measurement of rheumatoid factor may aid in the diagnosis of rheumatoid arthritis.

Submission Summary (Full Text)

{0}------------------------------------------------

### JAN 1 1 2000

K993843

# SUMMARY OF 510 (k) SAFETY AND EFFECTIVENESS INFORMATION

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

MDI RF Test reagents (P/N: RFKi-G) are intended for the semi-quantitative determination of IgM antibodies to IgG in human serum. The principal diagnostic value of this test is detection of autoantibodies, which are used as an aid in patients with rheumatoid diseases.

The Micro Detect, Inc. RF reagent ( MDI RF Test) is intended to be used as a manual procedure. The reagents are supplied as a micro plate coated with specific antigens and Controls, Wash Buffer, Sample Diluent, Conjugate, Substrate, and Stop Solution.

The patient results obtained using the MDI RF Test is substantially equivalent to those obtained by using predicate assays:

Relative Sensitivity: 95.2% Relative Specificity: 100 %

Precision (%CV); 1.9-5.15(Inter) and 1.44-3.62(Intra)

Stability: One year at 2-8°C. The stability of the MDI RF Test Kit for the detection of IgM antibodies to IgG was found to be one year at 2-8℃. This was predicted from studies done under stress condition (47.59C), Real time stability has only been monitored for ten weeks at 2-8°C.

The Micro plate ELISA formats is a commonly used format for the detection of many entities of clinical interest, including autoimmune diseases.

The MDI RF Test system is shown to be safe and effective and provide results, which are substantially equivalent to those, obtained by predicate products.

{1}------------------------------------------------

### DEPARTMENT OF HEALTH & HUMAN SERVICES

Image /page/1/Picture/1 description: The image is a black and white logo for the U.S. Department of Health & Human Services. The logo features a stylized eagle or bird-like figure with three curved lines forming its body and wings. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular fashion around the bird figure.

#### Public Health Service

# JAN 1 1 2000

Food and Drug Administration 2098 Gaither Road Rockville MD 20850

Mehdi Alem, Ph.D. President Micro Detect, Inc. 2852 Walnut Avenue Suite H-1 Tustin, California 92780

Re: K993843

> Trade Name: MDI RF Test Regulatory Class: II Product Code: DHR Dated: December 17, 1999 Received: December 21, 1999

Dear Dr. Alem:

We have reviewed your Section 510(k) notification of intent to market the device referenced above and we 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). 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, 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 (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic QS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.

{2}------------------------------------------------

### Page 2

Under the Clinical Laboratory Improvement Amendments of 1988 (CLIA-88), this device may require a CLIA complexity categorization. To determine if it does, you should contact the Centers for Disease Control and Prevention (CDC) at [phone].

This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.

If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at [phone]. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at [phone]. Also, please note the regulation entitled, "Misbranding by reference to premarket notification"(21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number [phone] or [phone], or at its internet address "http://www.fda.gov/cdrh/dsma/dsmamain.html".

Sincerely yours,

Steven Sutman

Steven I. Gutman, M.D, M.B.A. Director Division of Clinical Laboratory Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

{3}------------------------------------------------

K 922723/A1

of of of of Page

510(k) Number (if known): k993843

Device Name: MDI RF Test

Indications For Use:

The MDI RF Test is a semi quantitative Enzyme Immunoassay (EIA) Kit for the test is The MDI KF Test is a sem qualintative 22 (RF) in human serum. The test is
detection of IgM antibodies against human IgG (RF) in human in VITRO detection of Igivi antionnies aganist framatoid arthritis. FOR IN VITRO
intended as an aid in the diagnosis of rheumatoid arthritis. FOR IN VITRO DIAGNOSTIC USE ONLY.

| | 2 | |
|--------------------------------|-----|--------|
| ு. பாட்டி | 00 | F |
| لاب . المس<br>24.1 - 1.1. | 190 | D<br>A |
| : | ું | / |
| . Grander Gr | g | C |
| | S | HAQ |
| | | |
| 104 - 16 -- 16 -- 16 -- 1 | 0 | /<br>0 |
| ないと<br>14. 14 | 1 | D |
| ్లాంగ్లు గ్రామం గ్రామం గ్రామం | ﺗ | E<br>/ |
| | | D |
| 1 | 5 | ) મુન |
| | | |

(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)

Concurrence of CDRH, Office of Device Evaluation (ODE)

| | <img alt="Signature" src="signature.png"/> <p><i>Peter E. Makini</i></p> |
|-----------------------------------------|--------------------------------------------------------------------------|
| (Division Sign-Off) | |
| Division of Clinical Laboratory Devices | |
| 510(k) Number | K993843 |

Prescription Use V (Per 21 CFR 801,109)

OR

Over-The-Counter Use__________________________________________________________________________________________________________________________________________________________

(Optional Format 1-2 -96)