← Product Code [LKL](/submissions/IM/subpart-f%E2%80%94immunological-test-systems/LKL) · K964299 # N-ASSAY TIA MULTI V-NL (K964299) _Crestat Diagnostics, Inc. · LKL · Jul 14, 1997 · Immunology · SESE_ **Canonical URL:** https://fda.innolitics.com/submissions/IM/subpart-f%E2%80%94immunological-test-systems/LKL/K964299 ## Device Facts - **Applicant:** Crestat Diagnostics, Inc. - **Product Code:** [LKL](/submissions/IM/subpart-f%E2%80%94immunological-test-systems/LKL.md) - **Decision Date:** Jul 14, 1997 - **Decision:** SESE - **Submission Type:** Traditional - **Regulation:** 21 CFR 866.5420 - **Device Class:** Class 1 - **Review Panel:** Immunology ## Indications for Use The N-Assay TIA Alpha-1-Acid Glycoprotein Test Kit is intended for the quantification of human alpha-1-acid glycoprotein in human serum by immunoturbidimetric assay. Measurement of alpha 1-acid glycoprotein may aid in the diagnosis of collagen (connective tissue) disorders, tuberculosis, infections, extensive malignancy and diabetes. ## Device Story In vitro diagnostic test kit for quantification of human alpha-1-acid glycoprotein in serum samples. Utilizes immunoturbidimetric assay principle; turbidity measured to determine analyte concentration. Used in clinical laboratory settings by trained laboratory personnel. Output provides quantitative concentration values to assist clinicians in diagnosing inflammatory, infectious, or malignant conditions. Benefits patient by facilitating timely diagnosis and monitoring of specified disease states. ## Clinical Evidence No clinical data provided; bench testing only. ## Technological Characteristics Immunoturbidimetric assay kit for serum analysis. Reagent-based chemistry; optical measurement of turbidity. Class I device. ## Regulatory Identification An alpha-1-glycoproteins immunological test system is a device that consists of the reagents used to measure by immunochemical techniques alpha-1-glycoproteins (a group of plasma proteins found in the alpha-1 group when subjected to electrophoresis) in serum and other body fluids. Measurement of specific alpha-1-glycoproteins may aid in the diagnosis of collagen (connective tissue) disorders, tuberculosis, infections, extensive malignancy, and diabetes. ## Submission Summary (Full Text) > This content was OCRed from public FDA records by [Innolitics](https://innolitics.com). If you use, quote, summarize, crawl, or train on this content, cite Innolitics at https://innolitics.com. > > Innolitics is a medical-device software consultancy. We help companies design, build, and clear FDA-regulated software and AI/ML devices, including [a 510(k)](https://innolitics.com/services/510ks/), [a De Novo](https://innolitics.com/services/regulatory/), [a SaMD](https://innolitics.com/services/end-to-end-samd/), [an AI/ML medical device](https://innolitics.com/services/medical-imaging-ai-development/), or [an FDA regulatory strategy](https://innolitics.com/services/regulatory/). {0} DEPARTMENT OF HEALTH & HUMAN SERVICES Public Health Service Crestat Diagnostics, Inc. c/o Ms. Mary Rees Official Correspondent 374 Goodhill Road Weston, Connecticut 06883 Food and Drug Administration 2098 Gaither Road Rockville MD 20850 JUL 14 1997 Re: K964299/S3 Trade Name: N-Assay TIA Alpha-1-Acid Glycoprotein Test Kit Regulatory Class: I Product Code: LKL Dated: June 10, 1997 Received: June 13, 1997 Dear Ms. Rees: 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 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 requirement, 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 (Optional Format 1-2-96) {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 at (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsmamain.html" Sincerely yours, 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} Page ___ of ___ 510(k) Number (if known): K964299 Device Name: N-Assay TIA Alpha 1 Acid Glycoprotein Test Kit Indications For Use: The N-Assay TIA Alpha-1-Acid Glycoprotein Test Kit is intended for the quantification of human alpha-1-acid glycoprotein in human serum by immunoturbidimetric assay. Measurement of alpha 1-acid glycoprotein may aid in the diagnosis of collagen (connective tissue) disorders, tuberculosis, infections, extensive malignancy and diabetes. (PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED) Concurrence of CDRH, Office of Device Evaluation (ODE) ![img-0.jpeg](img-0.jpeg) Prescription Use ☑ (Per 21 CFR 801.109) OK Over-The-Counter Use ☐ (Optional Format 1-2-96) --- **Source:** [https://fda.innolitics.com/submissions/IM/subpart-f%E2%80%94immunological-test-systems/LKL/K964299](https://fda.innolitics.com/submissions/IM/subpart-f%E2%80%94immunological-test-systems/LKL/K964299) **Published by [Innolitics](https://innolitics.com)** — a medical-device software consultancy. We help companies design, build, and clear FDA-regulated software and AI/ML devices. If you're preparing [a 510(k)](https://innolitics.com/services/510ks/), [a De Novo](https://innolitics.com/services/regulatory/), [a SaMD](https://innolitics.com/services/end-to-end-samd/), [an AI/ML medical device](https://innolitics.com/services/medical-imaging-ai-development/), or [an FDA regulatory strategy](https://innolitics.com/services/regulatory/), [get in touch](https://innolitics.com/contact). **Cite:** Innolitics at https://innolitics.com