The K-ASSAY Rheumatoid Factor is intended to be used for the quantitative determination of human rheumatoid factor in human serum by immunoturbidimetric assav.
Device Story
K-ASSAY Rheumatoid Factor is an in vitro diagnostic reagent for quantitative measurement of rheumatoid factor in human serum. Operates via immunoturbidimetric assay principle; utilizes antigen-antibody reaction to produce turbidity proportional to rheumatoid factor concentration. Used in clinical laboratory settings by trained personnel. Output is a quantitative concentration value used by clinicians to aid in the diagnosis of rheumatoid arthritis and other inflammatory conditions. Benefits include standardized, automated measurement of rheumatoid factor levels to support clinical decision-making.
Clinical Evidence
No clinical data provided; bench testing only.
Technological Characteristics
Immunoturbidimetric assay reagent for quantitative determination of rheumatoid factor. Designed for use on automated clinical chemistry analyzers. In vitro diagnostic device.
Indications for Use
Indicated for the quantitative determination of human rheumatoid factor in human serum. Intended for prescription use.
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.
Related Devices
K973464 — QUANTEX RF PLUS (LATEX, BUFFER, STANDARD, CONTROL) · Instrumentation Laboratory CO · Oct 22, 1997
K192727 — K-ASSAY (R) RF (Ver.2), K-ASSAY (R) RF Calibrator (Ver.2) · Kamiya Biomedical Company · May 20, 2020
{0}------------------------------------------------
Image /page/0/Picture/1 description: The image shows the logo for the Department of Health & Human Services (HHS) in the USA. The logo features a stylized caduceus, a symbol often associated with medicine and healthcare, consisting of a staff with two snakes coiled around it. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES · USA" are arranged in a circular fashion around the caduceus.
## 9 1399 JUN
Food and Drug Administration 2098 Gaither Road Rockville MD 20850
Mr. Colin Getty Official Correspondent Kamiya Biomedical Company 910 Industry Drive Seattle, Washington 98188
Re: K991409 Trade Name: K-ASSAY Rheumatoid Factor Regulatory Class: II Product Code: DHR Dated: April 21, 1999 Received: April 22, 1999
## Dear Mr. Getty:
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.
{1}------------------------------------------------
## 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 (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 (301) 443-6597, 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
{2}------------------------------------------------
## INDICATIONS FOR USE STATEMENT
510(k) Number (if known): ____________________________________________________________________________________________________________________________________________________
K-ASSAY Rheumatoid Factor. Device Name:
Indications For Use:
・
(
The K-ASSAY Rheumatoid Factor is intended to be used for the quantitative determination of human rheumatoid factor in human serum by immunoturbidimetric assav.
.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ﻪ ﺩﺭ ﺳﻮ ﺑﻪ
(PLEASE DO NOT WRITE BELOW THIS LINE – CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
(Division Sign-Off)
Division of Clinical Laboratory Devices
510(k) Number K991405
Prescription Use
(Per 21 CFR 801.109)
OR
3
Over-The-Counter Use
Optional Format 1-2-96)
Panel 1
/
Sort by
Ready
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.