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Lab Test Dictionary

Lactic Acid (Plasma)


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. Place tube on wet ice and deliver to lab immediately after collection. Lactic Acid levels increase as the specimen sits on cells before centrifuging and separating plasma. Avoid capillary draws (fingerstick or heelstick) 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

Test Volume Required

0.5 mL Plasma

Minimum Test Volume

0.3 mL Plasma

Processing Instructions

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 directly to Chemistry as soon as possible. Communicate specimen arrival to CLS/MLT.


CPT Codes

83605


Revised

9/11/23

Initials

SA