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HelpTest Code HCY Homocysteine
Specimen Requirements
Specimen Type: Whole Blood
Container/Tube: Purple Top (EDTA)
Volume: 3.0 mL
Minimum Volume: 3.0 mL blood
Collection Instructions: Send sample on ice to laboratory immediately. Centrifuge within 2 hrs.
Specimen Stability
| Specimen Type | Plasma |
|---|---|
| Ambient | Reject |
| Refrigerate | 6 hours (on ice) / 14 days (2 - 8°C) |
| Frozen | 1 year |
Methodology
Chemiluminescent Immunoassay
Days and Times Performed
Monday and Thursday, TAT 6 days
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Reference Interval
5.1 – 15.4 umol/L
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Assessment of coronary heart disease (CHD) risk, obstetric complication and neural tube defects.
Service Code
31053
LOINC Code Information
13965-9
Update
Last updated 11/03/2025