Specimen Stability (for laboratory use only)
Collection Container
Light green top (lithium heparin, PST)
Service Code:
LBC00336
Collection Instructions:
Obtain specimen 8-12 hours after the last dose.
1. Draw sufficient blood into light green top tube.
2. Gently invert the tube 8 - 10 times.
3. Send specimen to the laboratory immediately.
1. Draw sufficient blood into light green top tube.
2. Gently invert the tube 8 - 10 times.
3. Send specimen to the laboratory immediately.
Unacceptable Conditions:
Clotted
Grossly haemolysed
Grossly icteric
Grossly lipaemic
Grossly haemolysed
Grossly icteric
Grossly lipaemic
Specimen Stability:
Ambient
Not Centrifuged: 2 hours
Reflex Tests:
N.A.
Remarks:
Performance
Turn Around Time:
Stat: 2 hours. Routine: 4 hours
Days Test Performed:
Testing Laboratory:
Woodlands Hospital Laboratory Medicine and Pathology, Biochemistry (Go Live 03/06/2025)
Clinical & Interpretative
Description:
Test is useful for therapeutic drug monitoring.
Methodology:
Enzymatic multiplied immunoassay technique (EMIT)
Reference Interval:
0.8 – 2.0 μg/L
Critical Values:
>2.4 μg/L
