Sign in →

Test ID FORAU Formic Acid, Urine

Specimen Required

Collection Container: Plastic, preservative-free urine container

Specimen Volume: 3 mL

Collection Instructions:

1.     Collect 3 mL random urine without preservative.

2.     Ship frozen in a plastic container.

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
FSGCU Specific Gravity Confirmation, U No No

Method Name

Colorimetry (C)

Gas Chromatography/Mass Spectrometry (GC/MS)

Reporting Name

Formic Acid, Urine

Specimen Type


Specimen Minimum Volume

1.4 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Frozen 90 days

Reference Values

Reporting limit determined each analysis


Creatinine (mg/L)

  U.S. Population (10tth - 90th percentiles, median)

  All participants:

  335 - 2370 mg/L, median: 1180 (n=22,245)


  495 - 2540 mg/L, median: 1370 (n=10,610)


  273 - 2170 mg/L, median 994 (n=11,635)


Formic Acid (mcg/mL)

Synonym(s): Formate

In a study of 70 non-exposed individuals, the median level of formic acid in urine was 13.6 mcg/mL (range 1.0-95 mcg/mL). Formic acid is also a metabolite of methanol, formaldehyde, and methyl formate among others. Values may vary depending on environmental and occupational exposures, diet, nutritional condition, and pregnancy status.


Formic Acid (Creatinine Corrected) (mg/g Creat)

Synonym(s): Formate

In a study of 70 non-exposed individuals, the median level of formic acid in urine was 14 mg/g creatinine with the 95th

Day(s) Performed

Colorimetry (C): Monday-Sunday

Gas Chromatography/Mass Spectrometry (GC/MS): Wednesday

Report Available

8 to 10 days

Performing Laboratory

NMS Labs

CPT Code Information



81002, if appropriate

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FORAU Formic Acid, Urine Not Provided


Result ID Test Result Name Result LOINC Value
Z5309 Creatinine 2161-8
Z5310 Formic Acid 14052-5
Z5311 Formic Acid (Creatinine corrected) 13742-2

NY State Approved


Test Classification

This test was developed and its performance characteristics determined by NMS Labs. It has not been cleared or approved by the U.S. Food and Drug Administration.

Testing Algorithm

If creatinine is <200 or >5000, Specific Gravity Confirmation, Urine, test ID FSGCU is performed it is at no additional charge.