The Liofilchem MTS (MIC Test Strip) Tetracycline 0.016-256 µg/mL is a quantitative method intended for the in vitro determination of antimicrobial susceptibility of bacteria. MTS consists of specialized paper impregnated with a pre-defined concentration gradient of an antimicrobial agent, which is used to determine the minimum inhibitory concentration (MIC) in µg/mL of antimicrobial agents against bacteria as tested on agar media using overnight incubation and manual reading procedures. The MTS Tetracycline at concentrations of 0.016-256 µg/mL should be interpreted at 16-20 hours of incubation. Tetracycline has been shown to be active both clinically and in vitro against these bacterial species according to the FDA drug approved label: Staphylococcus aureus, Acinetobacter baumannii, Escherichia coli, Klebsiella aerogenes, Klebsiella oxytoca, Klebsiella pneumonia
Device Story
MTS Tetracycline is a manual, growth-based antimicrobial susceptibility test. It consists of a paper strip impregnated with a predefined exponential concentration gradient of tetracycline (0.016-256 µg/mL). The strip is applied to an inoculated Mueller Hinton agar plate. After 16-20 hours of incubation, a symmetrical inhibition ellipse forms around the strip. The clinician manually reads the MIC value at the point where the ellipse intersects the strip. The device provides quantitative MIC results, which are used by healthcare providers to determine the susceptibility of bacterial isolates to tetracycline, aiding in the selection of appropriate antibiotic therapy. The device is intended for use in clinical laboratory settings.
Clinical Evidence
No clinical data provided; bench testing only.
Technological Characteristics
Specialized paper strip impregnated with a predefined exponential concentration gradient of tetracycline (0.016-256 µg/mL). Manual reading of inhibition ellipse on Mueller Hinton agar. Incubation at 35 ± 2°C for 16-20 hours. Standalone, non-electronic, manual diagnostic test.
Indications for Use
Indicated for in vitro determination of antimicrobial susceptibility of non-fastidious Gram-negative organisms (A. baumannii, E. coli, K. aerogenes, K. oxytoca, K. pneumoniae) and S. aureus. For prescription use.
Regulatory Classification
Identification
An antimicrobial susceptibility test powder is a device that consists of an antimicrobial drug powder packaged in vials in specified amounts and intended for use in clinical laboratories for determining in vitro susceptibility of bacterial pathogens to these therapeutic agents. Test results are used to determine the antimicrobial agent of choice in the treatment of bacterial diseases.
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Submission Summary (Full Text)
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Image /page/0/Picture/0 description: The image shows the logo of the U.S. Food and Drug Administration (FDA). The logo consists of two parts: the Department of Health and Human Services logo on the left and the FDA logo on the right. The FDA logo includes the letters "FDA" in a blue square, followed by the words "U.S. FOOD & DRUG ADMINISTRATION" in blue text.
January 11, 2019
Liofilchem s.r.l. % Laura Koeth President Laboratory Specialists, Inc 26214 Center Ridge Road Westlake, Ohio 44145
Re: K183140
Trade/Device Name: MTS Tetracycline 0.016 - 256 ug/mL Regulation Number: 21 CFR 866.1640 Regulation Name: Antimicrobial susceptibility test powder Regulatory Class: Class II Product Code: JWY Dated: November 9, 2018 Received: November 13, 2018
Dear Ms. Koeth:
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 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) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. 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. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further 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 of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801 and Part 809); medical device reporting of medical device-related adverse events) (21 CFR
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803) for devices or postmarketing safety reporting (21 CFR 4. Subpart B) for combination products (see https://www.fda.gov/CombinationProducts/GuidanceRegulatoryInformation/ucm597488.htm); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). 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 comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/) and CDRH Learn (http://www.fda.gov/Training/CDRHLearn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (http://www.fda.gov/DICE) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
for
Uwe Scherf, M.Sc., Ph.D. Director Division of Microbiology Devices Office of In Vitro Diagnostics and Radiological Health Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if known)
Device Name
Indications for Use (Describe)
| Type of Use (Select <i>one</i> or <i>both</i> , as applicable) |
|----------------------------------------------------------------|
|----------------------------------------------------------------|
Prescription Use (Part 21 CFR 801 Subpart D)
| Over-The-Counter Use (21 CFR 801 Subpart C)
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