Apolipoprotein A1

Test Code
5223

CPT Codes
82172

Preferred Specimen
1 mL serum collected in a serum separator tube (SST)

Patient Preparation
Fasting ≥ 12 hours is recommended

Minimum Volume
0.5 mL

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 7 days
Refrigerated: 10 days
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Grossly lipemic

Methodology
Immunoassay (IA)

Setup Schedule
Set up: Mon-Sat; Report available: Next day

Reference Range
Male ≥115 mg/dL  
Female ≥125 mg/dL  
     
Risk Category Male Female
Optimal ≥115 mg/dL ≥125 mg/dL
High <115 mg/dL <125 mg/dL
Cardiovascular event risk category cut points (optimal, high) are based on the AMORIS study, Walldius G et al. J Intern Med. 2004;255:188-205.

Clinical Significance

Apolipoprotein A1 is the primary protein associated with HDL cholesterol. Like HDL cholesterol, increased concentrations are associated with reduced risk of cardiovascular disease.



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



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.