NITF - Specimen: Nitrogen, Total, Feces

Test Catalog

Test Name

Test ID: NITF    
Nitrogen, Total, Feces

Specimen Type Describes the specimen type validated for testing


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 Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

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 The amount of sample necessary to provide a clinically relevant result as determined by the Laboratory.

2.5 g

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected








Mixed Fecal/Urine

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperatures are also included.

Specimen TypeTemperatureTime
FecalFrozen (preferred)
 Ambient 7 days
 Refrigerated 7 days