Guaifenesin, Blood Test (2185B)

Guaifenesin, Blood Test (2185B)

Analysis Code 2185B 
Test Name Guaifenesin, Blood 
Test Includes Guaifenesin 
Compound Synonym(s) Glyceryl Guaiacolate 
Purpose Therapeutic Drug Monitoring; This test is New York State approved. 
Category Expectorant 
Method(s) High Performance Liquid Chromatography/
TandemMass Spectrometry (LC-MS/MS) 
Specimen Requirements 1 mL Blood 
Transport Temperature Refrigerated 
Specimen Container Gray top tube (NaF/KOX) 
Special Handling None 
Light Protection Required Not Required 
Stability Room Temperature: 1 day(s)
Refrigerated: 7 day(s)
Frozen (-20 °C): 3 month(s) 
*Rejection Criteria Received Room Temperature. 
Day(s) Test Set-up / TAT [LC-MS/MS] Monday Wednesday Friday / 3 days 
Suggested CPT Code 80375 
**Minimum Volume 0.25 mL 
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You are viewing Guaifenesin, Blood Test (2185B)
*Rejection criteria pertain to clinical specimen submissions only.
**Stated minimum volume allows for a single analysis. Repeat analysis will not be performed.


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