Ethylbenzene Exposure Biouptake, Urine Test (2029U)

Ethylbenzene Exposure Biouptake, Urine Test (2029U)

Analysis Code 2029U 
Test Name Ethylbenzene Exposure Biouptake, Urine 
Test Includes Creatinine; Mandelic Acid; Mandelic Acid (Creatinine corrected); Mandelic Acid Plus Phenylglyoxylic Acid (Creatinine corrected); Phenylglyoxylic Acid; Phenylglyoxylic Acid (Creatinine corrected) 
Compound Synonym(s) Benzoylformic acid; Mandelate; Organic Acids; Phenylglyoxylate; Styrene and Ethylbenzene Metabolite; alpha-Hydroxyphenylacetic acid 
Purpose Occupational Exposure Monitoring; This test is New York State approved. 
Category Biological Marker (Renal), Aromatic Solvents Metabolites 
Method(s) Colorimetry (C)
High Performance Liquid Chromatography/
TandemMass Spectrometry (LC-MS/MS) 
Specimen Requirements 3 mL Urine 
Transport Temperature Refrigerated 
Specimen Container Plastic container (preservative-free) 
Special Handling Collect sample at end of shift.
Acidify with 1.0 mL acetic acid per 100 mL urine. Frozen stability was determined without acid. 
Light Protection Required Not Required 
Stability Room Temperature: 5 day(s)
Refrigerated: 30 day(s)
Frozen (-20 °C): 1 month(s) 
*Rejection Criteria Received Room Temperature. 
Day(s) Test Set-up / TAT [Colorimetry] Monday-Saturday / 1 day
[LC-MS/MS] Thursday / 4 days 
Suggested CPT Code 82570
83921 
**Minimum Volume 1.1 mL 
Reflex Testing
(when required, addl' fee may apply)
6022U - Specific Gravity Confirmation, Urine 
Test Summary Sheet Generate  

You are viewing Ethylbenzene Exposure Biouptake, Urine Test (2029U)
*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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