Resources
 
 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Hemoglobin A2, Quantitative

Test Code
HGLA2


Alias/See Also
511


CPT Codes
83020

Preferred Specimen
5 mL whole blood collected in an EDTA (lavender-top) tube


Patient Preparation
Blood transfusions within the last 4 months may affect results.

Minimum Volume
1 mL


Instructions
Submit two EDTA (lavender-top) tubes if a CBC is also being requested.


Transport Temperature
Room temperature


Specimen Stability
Room temperature: 5 days
Refrigerated: 7 days
Frozen: Unacceptable


Methodology
Capillary Electrophoresis

Setup Schedule
Set up: Sun, Tues-Sat; Report available: 1-3 days after receipt at the performing laboratory. Add two (2) days for transport.


Reference Range
<1 Month<1.0 %
1-3 Months<2.3 %
4-5 Months<2.5 %
6-11 Months<3.0%
1-4 Years<3.2 %
≥5 Years2.0-3.2 %


Clinical Significance
Differential diagnosis of thalassemia and anemias. In B-thalassemia trait A2 is elevated.


Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Dr
Chantilly, VA 20153


Last Updated: May 5, 2023


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.