Specimen Required

Container/Tube: Light blue-top (3.2% sodium citrate) tube

Specimen: 0.5 mL citrated plasma

Transport Temperature: Frozen

Collection Instructions:

1. If no other tube is drawn, draw a discard tube.

2. If there is a delay in transport, spin down, spin plasma again, and send citrate platelet-poor plasma. Double-centrifuged specimens are critical for accurate results as platelet contamination may cause spurious results.

3. Fill tube completely.

4. Mix by gently inverting several times.

5. Send aliquot frozen.