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Chromogranin A

Chromogranin A

Epic Mnemonic
Sunquest Mnemonic

LAB2022
CGA

Category

Sendouts

Methodology

Immunofluorescent Assay

Test Performance Schedule

Monday through Friday

Result Availability

2-5 days

Specimen Required

Container

Gold top (SST) or Red top (serum) tube

Volume

Pref. Vol.: 0.5 mL serum
Min. Vol.: 0.2 mL serum

Collection Instructions

• Routine venipuncture
• Clot 30 minutes
Promptly centrifuge for 15 minutes
Immediately transfer serum to 5 mL aliquot tube (T465)
Freeze

Transportation Instructions

Frozen

Stability

After separation from cells:
• Room temperature: Unacceptable
• Refrigerated: Unacceptable
• Frozen: 365 days

Causes for Rejection

• Plasma submitted
• Not frozen immediately
• Severely hemolyzed specimen
• Specimen submitted in original tube

Remarks

Patient Preparation:
Proton pump inhibitor drugs should be discontinued for at least 2 weeks before collection

CPT Codes

86316

Effective/Revised

8/20/2019

 

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