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Test Code WBLA Lactic Acid, Venous, Whole Blood, LAB730

Important Note

Lactic Acid will primarily be performed on the Siemens Dimension Vista System.  In the following scenarios the WBLA testing will be performed:




In Code Blue or MET calls when formerly a lactic acid was performed by ISTAT.


In cases when the gray top needed for the Vista lactic acid was not drawn.  Note: The Gem 4000 needs to be performed within 30 minutes.


The patient has ABGS, VBG or MOST ordered concurrently with the lactic acid which will save the patient from having more blood drawn and streamline the processing.


Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements


Preferred: heparinized syringe

Acceptable: Green-top (heparin) tube

Specimen Volume: 65 uL of heparinized whole blood

Stability: Specimens should be analyzed within 30 minutes of collection


Reference Values

0.4 – 2.0 mmol/L


Critical Value:  4.0 mmol/L

Useful For

Lactate measurements help evaluate acid-base status and are used in the diagnosis and treatment of lactic acidosis (abnormally high acidity in the blood).

Day(s) Test Set Up

Monday through Sunday


Amperometric measurement.

Test Classification and CPT Coding