Lipoprotein (a)

Test Code

CPT Codes

Preferred Specimen
1 mL serum

Minimum Volume
0.5 mL

Other Acceptable Specimens
Plasma collected in: EDTA (royal blue-top), lithium heparin (green-top), EDTA (lavender-top) or sodium heparin (green-top) tubes

Avoid repeated freeze/thaw cycles.

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 90 days

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


Setup Schedule
Monday-Saturday Morning, Night
Sunday Night
Report available: Next Day

Reference Range
<75 nmol/L

Risk nmol/L
Optimal <75
Moderate 75-125
High >125

Cardiovascular event risk category cut points (optimal, moderate, high) are based on Tsimikas S. JACC 2017;69:692-711.

Clinical Significance

Elevated concentrations of Lp(a) are associated with increased risk of coronary artery 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.