Preferred Specimen(s) 1 mL plasma from an EDTA (Lavender Top) tube. Collect specimen in a plastic Lavender Top tube.
Instruction Mix thoroughly by inversion. Centrifuge and separate the plasma from the cells within one hour of collection. Transfer the plasma to a plastic vial using a plastic transfer pipette. Freeze specimen immediately for storage and transport.
Transport Container Plastic, leakproof container
Transport Temperature Frozen
Reject Criteria
- Specimens received in glass vacutainers,
- Specimens not received frozen
Methodology Chemiluminescene
Clinical Significance Rule out congestive heart failure (CHF) in symptomatic individuals, Determine prognosis in individuals with CHF or other cardiac disease, Maximize therapy in individuals with heart failure