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HelpTest Code LAC Lactate, plasma
Additional Codes
| Epic Ordering Code | LAB95 |
| NBS code | LBC04623 |
| Service code | 31501 |
Specimen Requirements
Submit the following:
| Container: |
| Grey Top |
Additional information: Do not use torniquet during sample collection to avoid spurious lactate elevation. Send sample on ice to laboratory immediately.
Processing Requirements
Centrifuge within 2 hrs.
Specimen type: Plasma
Volume: 0.5mL
Specimen Stability
| Specimen Type | Plasma |
|---|---|
| Ambient | Reject |
| Refrigerate | 3 days |
| Frozen | 3 days |
Specimen Condition
| Gross Haemolysis | Alert/Reject |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Methodology
Enzymatic Assay
Days and Times Performed
24 hrs, TAT 1 day
Reference Interval
0.5 – 2.2 mmol/L
Critical value: > 5.0 mmol/L
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Evaluation of Metabolic Acidosis and Lactic Acidosis.
Update
Last updated 26/07/2026
LOINC Code Information
2524-7