Effective June 3, 2026, due to vendor raw material supply shortages, all Lipoprotein (a) testing will be transitioned from in-house assay to Quest Diagnostics, Wood Dale, IL.
| Current (In-House) | Quest Diagnostics | |
| Test Name | Lipoprotein (a) | Lipoprotein (a) |
| Test code | LAB1230915 | LAB1232338 |
| Preferred Specimen Type | Serum | Serum |
| Reference Range | ≤30 mg/dL | <75 nmol/L |
| Turn Around Time | 2 days | 4 days |
.
| Quest Diagnostics Risk Stratification Risk | nmol/L |
| Optimal | <75 |
| Moderate | 75-125 |
| High | >125 |
NOTE: With this transition, there will be changes in reference ranges and units of measurement. The units will change from mass units (mg/dL) to molar units (nmol/L); molar units are the preferred units per the 2026 American College of Cardiology/American Heart Association Joint Committee Guidelines. There are no changes to the specimen type. Turnaround time will be 4 days.
