CHROA – “Chromogranin A” replaced by CGA – “Chromogranin A”

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Inactivated/Replace Test

Effective Date

03/25/2025

Included in Report

WML Test Directory Update | March 2025

Replacement Test

CHROMOGRANIN A

Inactivated Test Details

Mnemonic

CHROA

Ordering Code

3420100

CPT-4 Codes(s)

86316

Replacement Test Details

Mnemonic

CGA

Ordering Code

3000392

CPT-4 Codes(s)

86316

Turnaround Time
2 - 6 days
Performed
Tuesday, Friday
Legacy Code
CGA
Example report
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Specimen Information

Collect

Red top

Specimen Preparation

Centrifuge, separate and send 1.0 mL serum in a screw capped plastic vial.

Alternate Specimen

Serum separator tube (SST)

Minimum Volume

0.5 mL

Transport Temperature

Frozen

Rejection Criteria

Plasma, whole blood

Stability

Room temperature: 48 hours
Refrigerated: 3 days
Frozen: 3 months

Methodology

Immunofluorescence assay
more

Reference Range

0 - 187 ng/mL
more

Performing Laboratory

Warde Medical Laboratory
more

New York DOH Approval Status

Yes
more

Interface Map for CGA

Test Name Ordering Code Result Code Component Name LOINC Code AOE Prompt Units
Chromogranin A3000392
3000393Chromogranin A No

The CPT codes provided are for general informational purposes only and are based on an interpretation of AMA guidance. It is the sole responsibility of the billing party to determine CPT codes. Any questions regarding coding should be directed to the paying party.

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