Specimen Stability (for laboratory use only)
Collection Container
Light green top (lithium heparin, PST)
Collection Instructions:
Morning sampling after 10 - 12 hours of fasting is preferred.
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
Refrigerate
Frozen
Reflex Tests:
N.A.
Performance
Turn Around Time:
Stat: 2 hours Routine: 4 hours
Days Test Performed:
Testing Laboratory:
Woodlands Hospital Laboratory Medicine and Pathology, Biochemistry
Clinical & Interpretative
Description:
Methodology:
Enzymatic colorimetric assay
Reference Interval:
Low: <1.0 mmol/L
Desirable: 1.0 - 1.5 mmol/L
High: ≥1.6 mmol/L
Desirable: 1.0 - 1.5 mmol/L
High: ≥1.6 mmol/L
Critical Values:
N.A.
