Benzene Standard Profile

CPT: 84600
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Test Details


  • Phenol, Urine

Test Includes

Phenol, urine; specific gravity


From the OSHA Benzene Standard: “Emergency examinations: If an employee is exposed to benzene in an emergency situation, the employer shall have the employee provide a urine sample at the end of the employee's shift and have a urinary phenol test performed on the sample within 72 hours.” This latter statement has been interpreted to mean that the laboratory must receive the urine specimen within 72 hours and that testing has been initiated, not necessarily completed. “The urine phenol shall be corrected to a specific gravity of 1.024”.1 (See Benzene Metabolite Profile, Urine [007732].)


Gas chromatography (GC)

Reference Interval

OSHA Benzene Standard: Phenol 75 mg/L (corrected to a standard specific gravity of 1.024)

Specimen Requirements


Urine (random)


15 mL

Minimum Volume

5.2 mL


Plastic urine container, no preservative


Sampling time is end of shift for emergency situations.

Storage Instructions

Maintain specimen at room temperature.

Stability Requirements



Room temperature

14 days


14 days


14 days

Clinical Information


1. Rules and Regulations. Federal Register. 1987; 52:34565.

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