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Test Code LAC Lactic Acd, Plasma

Important Note

Place IMMEDIATLY on ICE and send to Laboratory Service Center

Specimen Type

Plasma

Container/Tube

Gray Top

Offsite Collection Instructions

1. Collect sample following standard collection methods from
a
statis-free vein, avoid the use of a tourniquet
2. Immediately after drawing blood place specimen on ICE
3. Centrifuge specimen in a refrigerated centrifuge and
separate
plasma
4. Aliquot plasma into transport vial and freeze immediately
5. Transport frozen (-20 ?C)

Turnaround Time

4 hours

Test Includes

N/A

Preferred Volume

0.5 mL

UCMC Collection Instructions

1. Collect sample following standard collection methods from
a
statis-free vein, avoid the use of a tourniquet
2. Immediately after drawing blood place specimen on ICE and send to Laboratory
Service Center
(LSC) within 15
minutes
3. LSC will
centrifuge specimen in a
refrigerated centrifuge and separate plasma.
4. LSC will
send to separated plasma to
Chemistry on ice block for analysis

STAT Turnaround Time

1 hour

Test Usage

L-lactate levels that evaluate the acid-base status are used in
the diagnosis and treatment of lactic acidosis.

Critical Results

N/A

Test Limitations

Glycolysis in blood samples can rapidly increase lactate levels.
Cells contribute to the glycolysis and their quick removal is
essential for accurate lactate analysis.

The lactate level increases rapidly with physical exercise. The
time required for return to normal lactate values depends on the
physical fitness of the subject. 30 minutes at rest is usually
sufficient for this purpose.

Glycolate, a metabolite of ethylene glycol, causes a positive
interference which is variable from lot to lot of reagent. Dicynone
(Etamsylate) at therapeutic concentrations may lead to false-low
results.

Additional Information

N/A

Fee Code

30183605

Synonyms

N/A

Specimen Minimum Volume

0.2 mL

DAY(S) AND TIME(S) PERFORMED

24 hours, 7 days a week including holidays.

STAT DAY(S) AND TIME(S) PERFORMED

Avaliable

CPT

83605

Method Name

Colorimetric Assay

Reference Values

0.7 – 2.1 mmol/L

Reject Due To

Whole blood/unspun samples greater than 6 hours will be
rejected.

Specimens not submitted on ice will be rejected.

Included in Additional codes

N/A

Coverage Information

N/A

Stability: Room Temp

7 days

Stability: Refrigerated

7 days

Stability: Frozen

7 days