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Lactic Acid, Plasma
MessageCollected blood should be cooled on ice immediately and separated from the cells with 15 minutes.
Test Code
LA
Preferred Specimen
2 mL plasma from a gray-top tube (See stability section)
Patient Preparation
Sample should be collected without the use of a tourniquet; avoid hand-clenching. If a tourniquet has been used, it should be released for one minute prior to drawing blood. Collected blood should be cooled on ice immediately and separated from the cells within 3 hours.
Minimum Volume
0.5 mL
Other Acceptable Specimens
None
Instructions
The collected blood should be well-mixed and separated from the cells within 15 minutes
Transport Container
Transport tube
Transport Temperature
Refrigerated (cool packs)
Specimen Stability
Refrigerated: 2 days
Frozen: 7 days
Frozen: 7 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic • Grossly icteric
Methodology
Colorimetric
Setup Schedule
24/7
Report Available
Same day
Reference Range
0.5-2.2 mmol/L
Clinical Significance
Lactic acid is the endproduct of the anaerobic metabolism of glucose. The blood lactic acid concentration is affected by its production in muscle cells and erythrocytes and its rate of metabolism in the liver. During exercise, blood lactate can increase up to ten times of normal levels.
