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Lactate, plasma

Item Value
Approval req'd? No
Available Stat? Yes
Test code LACT
Test group lactate
Performed by Parnassus, Mission Bay & Mt. Zion Chemistry
In House Availability Test available 24 hours per day 7 days per week
Method Enzymatic
Collection Instructions Deliver sample immediately to laboratory for processing.
Container type Gray top
Amount to Collect 1 mL blood
Sample type Fluoride / oxalate whole blood
Preferred volume 1 mL blood
Min. Volume 0.3 mL blood
UCSF Rejection Criteria Serum, collected in non-Gray top tube, or received > 60 minutes after collection
Processing notes Provide immediately to Chemistry section who will centrifuge and assay sample.

If specimen cannot be run at either site centrifuge immediately. Aliquot and freeze the plasma (-20C) immediately and send immediately to other site for testing
Units mmol/L
Normal range
Age Normal Range
0 - 2 months 1.0-3.5 mmol/L
3 months - 1 year 1.0-3.3 mmol/L
2 - 18 years 1.0-2.4 mmol/L
≥ 18 years 0.5-2.2 mmol/L

Adult reference range from Beckman's Lactate Information Sheet which references Tietz, N. W., Clinical Guide to Laboratory Tests, 3rd Edition, Philadelphia, PA (1995). Adult range verified by testing 24 laboratory staff (July 2011).

Pediatric reference ranges adopted from Soldin, Steven J. Pediatric Reference Intervals (method 3), 6th edition, 2007.
Critical value > 3.9 mmol/L
Synonyms Lactic acid
Stability Room temperature 2 hours.
Turn around times 1 hour
CPT coding 83605
LOINC code 2524-7
Last Updated 1/28/2015 2:49:41 PM
Entry Number 585
Lab Procedure Link Click here for Procedure
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