Liquichek Anti-dsDNA Control is intended for use as an unassayed quality control to monitor immunoassay procedures for the detection of dsDNA autoantibodies.
Device Story
Liquichek Anti-dsDNA Control is an in vitro diagnostic quality control product used in clinical laboratories to monitor the performance of immunoassay procedures for detecting dsDNA autoantibodies. The device is prepared from human serum supplemented with preservatives (0.1% sodium azide) and stabilizers. It is provided in a liquid form, eliminating the need for reconstitution. Laboratory personnel use the control to verify the accuracy and precision of assay runs. By comparing observed results against expected values, clinicians ensure the reliability of patient test results, thereby supporting the accurate diagnosis and management of autoimmune conditions associated with dsDNA autoantibodies.
Clinical Evidence
No clinical data; bench testing only.
Technological Characteristics
Human serum-based control; contains 0.1% sodium azide preservative and stabilizers. Liquid form; stored at 2-8°C. Open vial stability claim of 30 days at 2-8°C. Analyte: Anti-dsDNA.
Indications for Use
Indicated for use as an unassayed quality control to monitor immunoassay procedures for the detection of dsDNA autoantibodies in clinical laboratory settings.
Regulatory Classification
Identification
An antinuclear antibody immunological test system is a device that consists of the reagents used to measure by immunochemical techniques the autoimmune antibodies in serum, other body fluids, and tissues that react with cellular nuclear constituents (molecules present in the nucleus of a cell, such as ribonucleic acid, deoxyribonucleic acid, or nuclear proteins). The measurements aid in the diagnosis of systemic lupus erythematosus (a multisystem autoimmune disease in which antibodies attack the victim's own tissues), hepatitis (a liver disease), rheumatoid arthritis, Sjögren's syndrome (arthritis with inflammation of the eye, eyelid, and salivary glands), and systemic sclerosis (chronic hardening and shrinking of many body tissues).
Predicate Devices
Kallestad Quantafluor Autoantibody Positive Control (K813592)
K984470 — LIQUICHEK ANTI-SS-A CONTROL, EIA, MODEL 209 · Bio-Rad · Dec 22, 1998
K984400 — LIQUICHEK ANA CONTROL, SPECKLED PATTERN, MODEL 202 · Bio-Rad · Dec 18, 1998
K984462 — LIQUICHEK ENA CONTROL, EIA SCREEN, MODEL NO. 206 · Bio-Rad · Dec 22, 1998
K984473 — LIQUICHEK ANA CONTROL, EIA SCREEN, MODEL 205 · Bio-Rad · Dec 22, 1998
Submission Summary (Full Text)
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Bio-Rad Laboratories
Diagnostics Group 9500 Jeronimo Road Irvine, California 92618-2017 Telephone: (949) 598-1200
K984396
DEC 18 1998
### Description of the Device .
Liquichek Anti-dsDNS Control is prepared from human serum with added preservatives and stabilizers. This product is provided in liquid form for convenience. This product contains 0.1% sodium azide as a preservative.
Statement of How Technological Characteristics Compare to Substantial Equivalent Device
A table is provided below comparing the similarities between the Bio-Rad Liquichek Anti-dsDNA Control and the device to which substantial equivalence is claimed.
| | Kallestad Quantafluor Autoantibody Positive<br>Control | Bio-Rad Liquichek<br>ANA Control, Homogeneous<br>Pattern |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------|
| Intended Use | Autoantibody positive control for Kallestad<br>Quantafluor Fluorescent Autoantobody Test<br>with mouse kidney, mouse stomach/kidney,<br>Hep-2 cell line, or Crithidia luciliae substrates. | An unassayed quality control<br>serum for monitoring<br>immunoassay procedures for<br>the detection of dsDNA<br>autoantibodies. |
| Form | Lyophilized | Liquid |
| Matrix | Human Serum | Human Serum |
| Levels | Positive | Negative, Positive, High<br>Positive |
| Storage | 2-8°C | 2-8°C |
| Analytes | ANA (Centromere, SSA, SSB, Scl-70, Sm.<br>RNP, Spindle, Nucleolar)<br>AMA<br>ASMA<br>APCA<br>Anti-nDNA | Anti-dsDNA |
| Open Vial<br>Claim | 6 weeks at 2-8°C<br>4 months at -20°C | 30 Days at 2-8°C |
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Bio-Rad Laboratories Diagnostics Group 9500 Jeronimo Road Irvine, California 92618-2017 Telephone: (949) 598-1200
# 510(k) Summary
Submitter Bio-Rad Laboratories 9500 Jeronimo Road Irvine, CA (949)598-1285 Fax (949)598-1555
Contact Person Elizabeth Platt
Date of Summary Preparation December 8, 1998
Device (Trade & Common Name) Liquichek Anti-dsDNA Control
Classification Name Class 11, 82LRM CFR 866.5100: Anti-DNA Antibody, Antigen, Control.
Devices to Which Substantial Equivalence is Claimed Kallestad Quantafluor Autoantibody Positive Control Sanofi Diagnostics Pasteur Chaska, Minnesota
K813592
#### Statement of Intended Use
Liquichek Anti-dsDNA Control is intended for use as an unassayed quality control to monitor immunoassay procedures for the detection of dsDNA autoantibodies.
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Public Health Service
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DEC 18 1998
Food and Drug Administration 2098 Gaither Road Rockville MD 20850
Elizabeth Platt Regulatory Affairs Supervisor Bio-Rad Laboratories 9500 Jeronimo Road Irvine, CA 92618
Re: K984396
Trade Name: Liquichek Anti-dsDNA Control, Model 213 Regulatory Class: II Product Code: LRM Dated: December 8, 1998 Received: December 9, 1998
#### Dear Ms. Platt:
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 OS 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.
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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 (770)488-7655.
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 (301) 594-4588. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. 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 (800) 638-2041 or at (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsmamain.html"
Sincerely vours.
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
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Page 1 of 1
510(k) Number: K984396
Device Name: Liquichek Anti-dsDNA Control
Indications for Use:
Liquichek Anti-dsDNA Control is intended for use as an unassayed quality control to monitor immunoassay procedures for the detection of dsDNA autoantibodies.
## (PLEASE DO NOT WRITE BELOW THE LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
(Concurrence of CDRH, Office of Device Evaluation)

(Division Sign-Off)
Division of Clinical Laboratory Devices
| 510(k) Number | K984396 |
|---------------|---------|
|---------------|---------|
| Prescription Use | <div>✓</div> | OR | Over-The Counter Use |
|------------------|--------------|----|----------------------|
|------------------|--------------|----|----------------------|
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