Red serum vial/tube, 5 mL

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 collectio

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

Lavender (EDTA), 4mL

Dk green heparin (Li or Na), no gel

Immediately following collection, mix sample thoroughly by gently inverting 8 - 10

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

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

Refrigerated (preferred) - 7 days

Frozen - 1 month

• Improper labels (unlabeled or mislabeled)
• Hemolysis (some procedures)
• Improper anticoagulant or ratio
• Delay in transport
• Improper storage temperature affecting results
• Inappropriate timing of collection
• Improper container
• Leaking container resulting in compromised specimen
• Quantity not sufficient (QNS)

Competitive Immunoassay

The proposed trough therapeutic range for seizure control is 2.0 - 25.0 µg/mL.

Patient response varies widely, particularly with co-medications and/or compromised renal function.