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Test Code FCCK1 Cholecystokinin (CCK)


Specimen Required


Patient Preparation:

1. Fasting: 10 to 12 hours

2. Antacid medications and medications that affect intestinal motility should be discontinued, if possible, for at least 48 hours prior to collection of specimen.

Supplies: GI Preservative Tube (T125)

Collection Container/Tube: Special tube containing GI preservative

Submission Container/Tube: Plastic vial

Specimen Volume: 3 mL GI plasma

Collection Instructions:

1. Collect 10 mL blood in special GI preservative tube.

2. Centrifuge immediately and aliquot 3 mL plasma into a plastic vial.

3. Freeze immediately and ship frozen.


Secondary ID

75914

Method Name

Direct Radioimmunoassay

Reporting Name

Cholecystokinin (CCK)

Specimen Type

GI Plasma

Specimen Minimum Volume

GI plasma: 1 mL

Specimen Stability Information

Specimen Type Temperature Time
GI Plasma Frozen 180 days

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject
Gross icterus Reject
Specimens not collected in GI preservative tube Reject

Reference Values

<80 pg/mL

Day(s) Performed

Monday, Thursday

Report Available

14 to 22 days

Performing Laboratory

Inter Science Institute

Test Classification

This test has not been cleared or approved by the US Food and Drug Administration. This test was developed and its performance characteristics determined by Inter Science Institute. Values obtained with different methods, laboratories, or kits cannot be used interchangeably with the results on this report. The results cannot be interpreted as absolute evidence of the presence or absence of malignant disease.

CPT Code Information

83519

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FCCK1 Cholecystokinin (CCK) Not Provided

 

Result ID Test Result Name Result LOINC Value
FCCK1 Cholecystokinin (CCK) 2081-8

Clinical Information

Cholecystokinin (CCK) is a 33 amino acid peptide having a very similar structure to gastrin. Cholecystokinin is present in several different sized forms including a 58 peptide Pro-CCK and 22, 12, and 8 peptide metabolites. The octapeptide retains full activity of the 33-peptide molecule. Cholecystokinin has an important physiological role in the regulation of pancreatic secretion, gall bladder contraction and intestinal motility. Cholecystokinin levels are elevated by dietary fat, especially in diabetics. Elevated levels are seen in patients with hepatic cirrhosis. Cholecystokinin is found in high levels in the gut, in the brain, and throughout the central nervous system.