CHROMOGRANIN A CHROMOA

Synonyms
Allscripts (AEHR) Order Name	Chromogranin A
Sunrise Clinical Manager (SCM) Order Name	Chromogranin A
EPIC Order Name	Chromogranin A (CgA)
Clinical Info	Aids in follow-up or surveillance of patients with known or treated carcinoid tumors. May be useful in monitoring nonsecretory sympathetic and parasympathetic neuroendocrine tumors.
Specimen Type	Blood
Container	Gold Top Tube
Collection Instructions	Container/Tube: Gold top tube or Red top tube Specimen: 0.5 mL serum (0.3 mL min)
Transport Instructions	Refrigerated
Specimen Stability	7 Days Room Temperature 14 Days Refrigerated 3 Months Frozen
Methodology	The Thermofisher/BRAHMS KRYPTOR® assay employs Time-Resolved Amplified Cryptate Emission Cryptate Emission (TRACE) technology based on a non-radioactive energy transfer between a donor (europium cryptate) and an acceptor (XL665) in a sandwich immunofluorescent format using two mouse monoclonal antibodies.37-40 This assay is calibrated against recombinant human CG, and according to the manufacturer's package insert.
Days Performed	TAT 4- 7 days
Performing Laboratory	LabCorp
CPT	86316 LOINC Code: 25587-7
PDM	5910049
Result Interpretation 0.0 – 101.8 ng/mL Values obtained with different assay methods should not be used interchangeably in serial testing. It is recommended that only one assay method be used consistently to monitor each patient's course of therapy. Results of this test are labeled for research purposes only by the assay's manufacturer. The performance characteristics of this assay have not been established by the manufacturer. The result should not be used for treatment or for diagnostic purposes without confirmation of the diagnosis by another medically established diagnostic product or procedure. The performance characteristics were determined by LabCorp. TAT: 4 - 7 Days
Forms