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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 # |
Lipoprotein (a)
Test Code34604
CPT Codes
83695
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
Instructions
Avoid repeated freeze/thaw cycles.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 90 days
Refrigerated: 14 days
Frozen: 90 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic • Grossly icteric
Methodology
Immunoturbidimetric
Setup Schedule
Monday-Saturday Morning, Night
Sunday Night
Report available: Next Day
Sunday Night
Report available: Next Day
Reference Range
<75 nmol/L
Cardiovascular event risk category cut points (optimal, moderate, high) are based on Tsimikas S. JACC 2017;69:692-711.
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