Update Type: Production schedule change
Test Updated: 12/03/2025
Test Overview
Test Methodology

Particle Enhanced Immunoturbidimetric

Test Usage

Determination of potential risk for coronary artery disease. Lp(a) measured and reported using molar units (nmol/L) can mitigate the influence of particle size differences in measurement of Lp(a).

Reference Range *

The National Lipid Association-recommended Lp(a) thresholds and Lp(a)-attributable ASCVD risk classification are as follows:

Lp(a)-attributable ASCVD risk Lp(a) molar concentration (NEW method)
Low Lp(a)-attributable ASCVD risk <75 nmol/L
Intermediate Lp(a)-attributable ASCVD risk 75 - <125 nmol/L
High Lp(a)- attributable risk, with increasing risk with higher Lp(a) levels ≥ 125 nmol/L

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday, Thursday
Analytic Time

8 hours

Soft Order Code
LPAM
MiChart Code
Lipoprotein A (LPA)
Synonyms
  • Lipo(a)
Laboratory
Chemical Pathology
Section
Automation
Specimen Requirements
Collection Instructions

Collect specimen in SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.
5 days at 15-25 C
20 days at 2-8 C
13 weeks at -20 C (+/- 5 C)
1 year at -70 C (+/- 5 C)
Only freeze once.

Special Handling

Fasting specimen is preferred.

Normal Volume

0.5 mL serum

Minimum Volume

0.3 mL serum

Storage Temperature
5 days at 15-25 C
20 days at 2-8 C
13 weeks at -20 C (+/- 5 C)
1 year at -70 C (+/- 5 C)
Only freeze once.
Billing
CPT Code
83695
Fee Code
20917
LOINC
43583-4
NY State Approved
No