Synonyms
Lactate
Specimen Type
Plasma
Performing Lab
RCHSD Chemistry
Epic ID
LAB95
Lab Test Days
As Received
Standard TAT
1 Hour
Stat TAT
1 Hour
Collection Information
Specimen Required
1 mL Blood
Container Type
Light Green (Lithium Heparin PST)
Collection Instructions
Plasma collected in a potassium oxalate/sodium fluoride (gray-top) tube at least half full is also acceptable. Immediately place collected specimen on ice and deliver to lab. Lactic Acid levels increase as the specimen sits on cells before centrifuging and separating plasma. Avoid capillary draws (fingerstick or heel stick) unless extreme circumstances as these collection techniques increases potential for hemolysis. Lactic Acid levels increase with hemolysis. Satellite locations must send patient to RCHSD for draw. Patients should not clench and unclench hands before or during phlebotomy. Ideally, a tourniquet should not be used. If a tourniquet is used but the draw is unsuccessful, remove the tourniquet and allow two minutes to elapse before trying again. Transport sample on wet ice if possible. Avoid hemolysis.
Processing Information - Lab Use Only
Transport Temperature
Refrigerated-OK/Frozen-OK
Specimen Stability
Room Temp: <15 minutes; Refrigerated: 3 Days; Frozen: 3 Days
Rejection Criteria
Serum; Hemolysis; Specimens not collected/kept on ice
Test Volume Required
0.5 mL Plasma
Minimum Test Volume
0.3 mL Plasma
Processing Instructions
Keep specimen on ice. Centrifuge the specimen within 15 minutes of collection and immediately remove the plasma from the red blood cells. Lactic Acid levels increase as the specimen sits on cells before centrifuging and separating plasma. Specimen should be free of bubbles. Remove bubbles with an applicator stick before analysis. Use a new applicator stick for each specimen to prevent cross-contamination. Deliver plasma on ice directly to Chemistry as soon as possible. Communicate specimen arrival to CLS/MLT.
CPT Codes
83605
Revised
9/10/25
Initials
SA