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Hemoglobin, Free

Message
Centrifuge serum specimens within 1 hour of collection, transfer the serum to a sterile, plastic, screw-capped vial(s), and send Refrigerated (cold packs).


Test Code
LAB3157 HGBFS


Alias/See Also
HGBFS


CPT Codes
84311

Includes
@BKRCERMSGREFRESH(2302793)@ @BKRCERMSGREFRESH(2302794)@


Instructions
Minimum Testing Volume: 0.2 mL Serum Transport Temperature: Refrigerated Stability: Ambient: 24 HoursRefrigerated : 7 DaysFrozen: 30 Days


Report Available
6-Days


Clinical Significance
1230170775



Last Updated: May 18, 2026


The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.