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Test Code 8260 Nitrogen, Total, Feces

Additional Codes

Mayo Test ID
NITF

Reporting Name

Nitrogen, Total, F

Useful For

Determining nitrogen balance, when used in conjunction with 24-hour urine nitrogen measurement

 

Assessing nutritional status (protein malnutrition)

 

Evaluating protein catabolism

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Fecal


Shipping Instructions


Send entire stool collection (must contain at least 5 g of feces) frozen on dry ice in Mayo Medical Laboratories-approved container.



Necessary Information


Length of collection period is required.



Specimen Required


Patient Preparation: Laxatives and enemas should not be used during collection.

Supplies: Stool Containers - 24, 48, 72 Hours Kit (T291)

Container/Tube: Stool container (T291); complies with shipping requirements, do not use other containers.

Specimen Volume: Entire collection (24, 48, 72, or 96 hour)

Collection Instructions:

1. Entire collection must be submitted which should contain at least 5g to 10 g of feces.

2. See Stool Collection Information Sheet in Special Instructions

Additional Information: Barium and boric acid interfere with test procedure.


Specimen Minimum Volume

2.5 g

Specimen Stability Information

Specimen Type Temperature Time
Fecal Frozen (preferred)
  Ambient  7 days
  Refrigerated  7 days

Reference Values

<16 years: not established

≥16 years: 1-2 g/24 hours

Day(s) and Time(s) Performed

Tuesday, Friday; 11 a.m.

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

84999

LOINC Code Information

Test ID Test Order Name Order LOINC Value
NITF Nitrogen, Total, F In Process

 

Result ID Test Result Name Result LOINC Value
17417 Nitrogen, Total, F 16141-4
DUR9 Collection Duration 13363-7
17416 Total Weight 30078-0

Method Name

Dumas Combustion

Barnes-Jewish Hospital Additional Information:
For BJH Laboratory Use Only

Laboratory Processing Instructions:
BJH Chemistry will forward to the performing laboratory. Specimen must be received on wet ice.