Specimen Stability

Container/Tube Type: 

Green (Lithium Heparin)
Mint Green (Heparin Plasma Separator Tube)
Red (No Additive)
SST (Serum Separator)

Preferred Collection Container: 

Green (Lithium Heparin)
Light Green (Heparin Plasma Separator Tube)

Also Acceptable Collection Container: 

Plasma from Lavender tubes is acceptable but will not route in the Laboratory Information System (Sunquest).

Transport Information: 

3.0 mL blood/1.0 mL serum or plasma

Minimum Sample Volume: 

0.3 mL blood/0.1 mL serum or plasma

Remarks: 

Collect (trough) levels just before the next dose. Collect (peak) levels 90 minutes after oral dosing of a slow release form.

Stability

Refrigerated Stability: 

7 days

Frozen Stability: 

2 months