Test ID: FFTUM
Tumor Necrosis Factor-Alpha, Highly Sensitive
Specimen Type 
Describes the specimen type needed for testing
Serum Red
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.
Collect blood in red-top vacutainer containing no additives. Allow
blood to clot (10-15 minutes) at room temperature. Centrifuge and
separate the serum from the cells. Transfer 1.0 mL serum to clean
plastic vial, and freeze as soon as possible.
NOTE: Cytokine levels may demonstrate diurnal variation.
Recommend cytokine levels be determined at the same time
of day for improved longitudinal comparison.
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.
0.5 mL
Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected
| Specimens other than | Serum |
| Anticoagulants other than | Plain red-top |
| Hemolysis | NA |
| Thawing | Warm reject; Cold reject |
| Lipemia | NA |
| Icteric | NA |
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 Type | Temperature | Time |
|---|---|---|
| Serum Red | Frozen | 270 days |
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