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Order Code LAB4177 Somatostatin (Somatotropin Release-Inhibiting Factor, SRIF)

Reporting Name

Somatostatin (Plasma)

Performing Laboratory

Inter Science Institute

Specimen Type

GI Plasma


Specimen Required


1. Patient should be fasting 10 to 12 hours prior to collection.

2. Patient should not be on any medications that affect insulin secretion or intestinal motility, if possible, for at least 48 hours prior to collection.

Specimen Type: GI Plasma

Container/Tube:

Preferred: EDTA tube containing GI preservative (T125)

Acceptable: EDTA purple top plasma tube

Specimen Volume: 3 mL

Collection Instructions:

1. Collect 10 mL of blood in special tube containing GI Preservative (T125), EDTA purple-top plasma tube is acceptable.

2. Specimen should be separated immediately.

3. Send 3 mL plasma frozen as soon as possible.


Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
GI Plasma Frozen 180 days

Reference Values

Up to 25 pg/mL

Day(s) Performed

Monday through Friday

CPT Code Information

84307

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject
Gross icterus Reject

Method Name

Direct Radioimmunoassay (RIA)