Specimen Stability (for laboratory use only)
Light%20green%20top%20(lithium%20heparin,%20PST).png
Collection Container
Light green top (lithium heparin, PST)
Specimen Type:
Blood
Minimum Specimen Volume:
3 mL
Collection Instructions:
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
Specimen Stability:
Ambient
Not Centrifuged: 2 hours
Refrigerate
Frozen
Reflex Tests:
N.A.
Related Formula:
LDL Calculated (LDLC):

Cholesterol (CHOL) (mmol/L) – HDL Cholesterol (HDL) (mmol/L) –
(Triglycerides (TG) (mmol/L) / 2.2)
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:
See individual test listings.
Reference Interval:
• Cholesterol, Total:
Desirable: <5.2 mmol/L
Borderline High: 5.2 - 6.1 mmol/L
High: ≥6.2 mmol/L

• Triglycerides:
Desirable: <1.7 mmol/L
Borderline High: 1.7-2.2 mmol/L
High: 2.3-4.4 mmol/L
Very High: ≥4.5 mmol/L

• HDL Cholesterol:
Low: <1.0 mmol/L
Desirable: 1.0-1.5 mmol/L
High: ≥1.6 mmol/L

• LDL Cholesterol, Calculated (calculated value)
- Optimal: <2.6 mmol/L
- Desirable: 2.6-3.3 mmol/L
- Borderline high: 3.4-4.0 mmol/L
- High: 4.1-4.8 mmol/L
- Very high: =>4.9 mmol/L
(Note: LDL-C calc only applies if TG < 4.5
and > 0.2 mmol/L)
Critical Values:
N.A.