Lt green plasma separator (PST)

Immediately following collection, mix sample thoroughly by gentle inverting 8 - 10 times to prevent clotting

Spin within two (2) hours of sample collection

Lt green plasma separator (PST)

Gold serum separator (SST) tube

Red serum vial/tube, 5 mL

Red serum vial/tube, 10 mL

Dk green Sodium heparin (Na hep), no gel, 4mL

Lavender (EDTA), 4mL

Gold:

Immediately following collection, thoroughly mix sample by gently inverting 5 times

Dk green:

Immediately follow collection, mix sample by inverting 8 - 10 times to prevent clotting

Gold:

1. Allow sample to clot for a minimum of 30 minutes
2. Spin within two (2) hours of sample collection

Red:

1. Allow sample to clot
2. Spin
3. Transfer serum to a False bottom plasma/serum transport vial/tube (AHL), labelled as serum, within two (2) hours of sample collection

Dk green/Lavendar:

1. Spin
2. Transfer plasma to a False bottom plasma/serum transport vial/tube (AHL), labelled as Na hep plasma, within two (2) hours of sample collection

Gold serum separator (SST) tube

False bottom plasma/serum transport vial/tube (AHL)

Refrigerated (preferred) - 7 days

Ambient - 2 days

Homogeneous enzyme immunoassay

Total: 50 - 100 µg/mL
Free: 6.0 - 20 µg/mL

Free: > 40 μg/mL

If total valproic acid is >150 μg/mL, no call