INT-04 DRUG INTERFERENCE TEST
Preparing concentrated drug solutions for interference testing has been labor intensive and expensive ̶ until now. Sun Diagnostics offers ASSURANCE™ DRUG Interference Test Kit for assessing interference.
Manufacturers and clinical laboratories are doing a reasonably good job assessing endogenous interferents that may alter lab test results. The next big hurdle is the assessment of interference from common drugs. There are literally hundreds of drugs in clinical use, both prescription and over-the-counter, which can vary widely in their blood and urine concentrations and which can introduce errors in laboratory testing. Which are the most important to test? An expert panel was convened to make specific recommendations concerning the drugs and concentrations that should be assessed when validating laboratory tests.
Preparing concentrated drug solutions for drug interference testing has been labor intensive and expensive ̶ until now. Sun Diagnostics now offers ASSURANCE™ DRUG Interference Test Kit for Laboratory Use as part of interference testing procedures. Interferents available include:
Components may be purchased individually, in customer-defined combinations, or as INT-04 (one vial of each component).
Drug components and concentrations are based on recommendations by the expert panel1 and the Clinical Laboratory Standards Institute (CLSI).2 The concentrations are 20 times the recommended test concentrations, allowing a 1:20 dilution with serum/urine pool.
Interferents and Typical Values Table
|ASSURANCE™ Drug Interference Test Kit
PN: INT-04 Price: $1400
Includes: One vial of each component, packaged in 2 kit boxes
Individual Interferents $110/vial
|Interferent(1 mL vial)||ASSURANCE™
|AMPICILLIN NA||150 mg/dL||INT-04AMP|
|ACETYLSALICYLIC ACID**||60 mg/dL||INT-04ASA|
|DOXYCYCLINE HCL||36 mg/dL||INT-04DOX|
|CEFOXITIN NA||13,200 mg/dL||INT-04CEF|
|Ethanol||For control pools for analytes marked **||INT-04E|
- Sonntag O, Scholer A. Drug interference in clinical chemistry: recommendations of drugs and their concentrations to be used in drug interference studies. Ann Clin Biochem 2001; 38:376-385.
- Clinical and Laboratory Standards Institute (CLSI). Interference Testing in Clinical Chemistry; Approved Guideline ̶ Second Edition.
CLSI document EP7-A2 (ISBN 1-56238-584-4). Clinical and Laboratory Standards Institute, 940 West Valley Road, Suite 1400, Wayne, Pennsylvania 19087-1898 USA, 2005.
- INT-04 should not be used past the expiration date listed on the kit box. Refer to Interferent vials for expiration of individually purchased components or custom kit configurations.
- If there is evidence of microbial contamination discard the vial.
- This product is not intended for use as a control, standard or calibrator.
- Information gathered from experiments performed using ASSURANCE™ Interference Test Kits should not be used to adjust patient results. Confirm results with an alternate method when necessary.
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Wernher von Braun
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