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Test Code LAC Lactate, plasma

Important Note

Draw blood without stasis to avoid spurious lactate elevation. Mix specimen well to avoid clotting. Chill specimen and send to laboratory immediately.

Laboratory Code

LAB95

Specimen Requirements

Specimen Type: Plasma
Container/Tube: Gray Top (Sodium Fluoride/Potassium Oxalate)
Volume: 4.5 mL
Minimum Volume: 0.5 mL plasma
Collection Instructions: Do not use torniquet during sample collection to avoid spurious lactate elevation. Send sample on ice to laboratory immediately.

Specimen Stability

Specimen Type Plasma
Ambient Reject
Refrigerate 3 days
Frozen 3 days

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

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.

Service Code

31502

LOINC Code Information

2524-7

Update

Last updated 11/03/2025