Chromogranin A


Abbrev Code:CGRA   
Order Code:LAB8229Order Name:Chromogranin A
Methodology:Immunofluorescence
CPT Codes: 86316 x1
Turnaround Time:Specimens are sent to the reference laboratory Mon-Sat; results are reported within 1-5 days.
Compliance:

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the U.S. Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.



Collection Instructions

Specimen:Blood
Optimal Volume:2 mL
Minimum\Peds Volume:1.2 mL
Container:Red (no gel)
Alternate Containers: Red or gold (gel)
Causes for Rejection:plasma


Processing and Shipping

Specimen Processing:Allow serum sample to clot completely at room temperature. Centrifuge and aliquot 1 mL, 0.5 mL minimum.
Shipping Instructions:Ship on dry ice.
Stability:After separation from cells: 48 hours at room temperature; 3 days refrigerated; 4 weeks frozen.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:3002867


Interpretive

Reference Range:0-103 ng/mL
Use:Nontumor-related elevations of Chromogranin A can be observed in gastrointestinal, cardiovascular, and renal disorders, as well as with proton pump inhibitor (PPI) therapy. It is recommended to stop PPI treatment for at least two weeks prior to testing. Moderate H2-receptor antagonist therapy does not lead to significant elevations of Chromogranin A.

This test is performed using the BRAHMS CGA II Kryptor kit. Results obtained with different methods or kits cannot be used interchangeably. Results cannot be interpreted as absolute evidence of the presence or absence of malignant disease.


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