NITF - Specimen: Nitrogen, Total, Feces

Test Catalog

Test ID: NITF    
Nitrogen, Total, Feces

Specimen Type Describes the specimen type needed for testing


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.

Container/Tube: Stool container (Supply T291)

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:

1. Length of collection period is required.

2. Barium and boric acid interfere with test procedure.

Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.

2.5 g

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









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

Specimen TypeTemperatureTime
FecalFrozen (preferred)
 Ambient 7 days
 Refrigerated 7 days
Tell Us What You Think