Test ID: FSUP
Substance P
Specimen Type 
Describes the specimen type needed for testing
GI Plasma
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.
Draw blood in special tube containing G.I. Preservative (MML
supply number T669). Spin down and separate 4 mL of plasma
as soon as possible. Freeze immediately. Ship frozen.
Note: 1) Patient should be fasting 10-12 hours prior to collection.
2) Patient should not be on any antacid medication or
medications that affect hypertension, gastroentero
intestinal functions, or pain relievers, if possible for at
least 48 hours prior to collection.
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.
3 mL
Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected
| Specimens other than | Plasma |
| Anticoagulants other than | EDTA with special GI preservative (MML supply T669) |
| 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 |
|---|---|---|
| GI Plasma | Frozen | 28 days |
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