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HelpTest Code LDLM LDL-Cholesterol, measured
Laboratory Code
LAB102
Specimen Requirements
Submit only one of the following:
Preferred
Specimen Type: Serum
Container/Tube: Gold Top (SSTII)
Volume: 5.0 mL
Minimum Volume: 0.5 mL serum
Collection Instructions: Allow specimen to clot for 30 mins and centrifuge within 2 hrs.
Acceptable
Specimen Type: Plasma
Container/Tube: Green Top (Li Heparin/PST)
Volume: 4.5 mL
Minimum Volume: 0.5 mL plasma
Collection Instructions: Centrifuge within 2 hrs.
Specimen Stability
| Specimen Type | Serum |
|---|---|
| Ambient | Not available |
| Refrigerate | 5 days |
| Frozen (-80˚C) | 3 months |
Methodology
Enzymatic Assay
Days and Times Performed
24 hrs, TAT 1 day
Specimen Condition
| Gross Haemolysis | Alert/Reject |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Reference Interval
Targets for patients based on risk:
| Very high | <1.4 mmol/L |
|---|---|
| High | <1.8 mmol/L |
| Intermediate | <2.6 mmol/L |
| Borderline | <3.4 mmol/L |
| Low | <4.1 mmol/L |
*Consider evaluating for Familial Hypercholesterolaemia in patients with LDL >4.9 mmol/L
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Risk factor for Coronary Heart Disease (CHD).
Service Code
31165
LOINC Code Information
69419-0
Alias
Low-Density Lipoprotein
Update
Last updated 26/08/2025