Specimen Requirements



Specimen Requirement

Preferred sample:
Collect SST/1.0 mL serum, after 30 minutes of clotting, promptly centrifuge and send.

Alternate sample:
Collect lithium heparin or lavender EDTA, centrifuge and transfer 1 mL plasma to a screw top plastic vial within 1 hour of collection, indicate sample type on tube and send.

Patient preparation:
Dietary supplements containing biotin may interfere in assays and may skew results to be either falsely high or falsely low. For patients receiving the recommended daily doses of biotin, draw samples at least 8 hours following the last biotin supplementation. For patients on mega-doses of biotin supplements, draw samples at least 72 hours following the last biotin supplementation.


Electrochemiluminescence (ECLIA)


Room temp: 3 days, Refrigerated: 6 days, Frozen: 24 months

Reference Range

The reference range is determined by the performing laboratory and will show on the report.


1-4 days performed Tuesday, Friday

Clinical Use

This assay aids in the diagnosis of individuals suspected of congestive heart failure; is indicated for risk stratification of patients with acute coronary syndrome and congestive heart failure. Also aids in the assessment of increased risk of cardiovascular events and mortality for patients at risk of heart failure who have stable coronary artery disease.

Test Code