ARUP's Laboratory Test Directory

Nitrogen, Total 48, 72, or 96 Hours, Fecal : 0092493

Mnemonic: NITRO FEC

Methodology: Quantitative Dumas Combustion
Performed: Varies
Reported: 3-10 days
Specimen Required: Patient Prep: Boric acid and barium interfere with test procedure.

Collect: 48, 72, or 96 hour stool collection.

Specimen Preparation: Transport entire 48, 72, or 96 hour stool collection. (Min: 10 g)

Storage/Transport Temperature: Frozen.

Remarks: Length of collection period is required.

Stability (collection to initiation of testing): 1 week; Refrigerated: 1 week; Frozen: 3 years

Reference Interval:
By report
CPT Code(s): 84999
Cross References: Nitrogen Balance (Nitrogen, Total 48-, 72-, 96-Hours, Feces)