Formic Acid, Urine [6142X]

Test Code
14738

CPT Codes
82570, 83921

Includes
Creatinine

Preferred Specimen
3 mL urine submitted in a plastic, leak-proof urine container

Minimum Volume
1.4 mL

Instructions
Freeze immediately and ship with dry ice.

Transport Temperature
Frozen

Specimen Stability
Room temperature: Not stable
Refrigerated: Not stable
Frozen: 90 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature > 5 days

Methodology
Colorimetry • Gas Chromatography (GC)

Setup Schedule
Creatinine Analytical: Set up: Mon-Sat; Report available: 1 day
Formic Acid Analytical: Set up: Wed; Report available: 3 days

Reference Range
Creatinine: 100 mg/L
Formic Acid: 0.50 mcg/mL
Formic Acid (Creatinine corrected): 0.10 mg/g Creat

Clinical Significance
Formic acid is a metabolite of, and an index of exposure to formaldehyde (which disappears from urine in minutes).

Performing Laboratory
National Medical Services
3701 Welsh Road
Willow Grove, PA 19090-0437



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.