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Formic Acid, Urine
Test Code6142
CPT Codes
82570, 83921
Includes
Creatinine
Preferred Specimen
3 mL urine collected in a plastic urine container
Minimum Volume
1.4 mL
Instructions
Freeze immediately and ship with dry ice.
Transport Temperature
Frozen
Specimen Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 16 months
Refrigerated: Unacceptable
Frozen: 16 months
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature • Received refrigerated
Methodology
Colorimetry • Gas Chromatography (GC)
FDA Status
This test was developed and its performance characteristics determined by NMS Labs. It has not been cleared or approved by the US Food and Drug Administration.
Setup Schedule
Monday-Sunday Morning Report available: 8 Days
Reference Range
Creatinine 100 mg/L
Formic Acid 0.50 mcg/mL
Formic Acid (Creatinine corrected) 0.10 mg/g Creat
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).