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Test Code LACS1 Lactate, Plasma


Ordering Guidance


This test does not measure D-lactate, an uncommon, often undiagnosed cause of lactic acidosis. If D-lactate testing is needed, order DLAC / D-Lactate, Plasma.



Necessary Information


Patient's age and sex are required.



Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube: Gray top (potassium oxalate/sodium fluoride)

Submission Container/Tube: Plastic vial

Specimen Volume: 0.625 mL Plasma

Collection Instructions:

1. Draw at least 1 mL whole blood in a 2-mL collection tube or at least 2 mL whole blood in a 4-mL collection tube.

2. Centrifuge and aliquot plasma into a plastic vial.


Useful For

Diagnosing and monitoring patients with lactic acidosis

 

Screening high-risk patients for sepsis or septic shock

Method Name

Enzymatic Colorimetric

Reporting Name

Lactate, P

Specimen Type

Plasma NaFl-KOx

Specimen Minimum Volume

Plasma: 0.25 mL

Specimen Stability Information

Specimen Type Temperature Time
Plasma NaFl-KOx Refrigerated (preferred) 14 days
  Ambient  8 hours

Reference Values

0-2 months: ≤3.3 mmol/L

3-24 months: ≤3.1 mmol/L

25 months-17 years: ≤2.2 mmol/L

> or  18 years: 0.5-2.0 mmol/L*

 

*Further information regarding the adult clinical action limit is available:

Townsend SR, Phillips GS, Duseja R, et al. Effects of compliance with the early management bundle (SEP-1) on mortality changes among medicare beneficiaries with sepsis: A propensity score matched cohort study. Chest. 2022;161(2):392-406. doi:10.1016/j.chest.2021.07.2167

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 to 2 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

83605

LOINC Code Information

Test ID Test Order Name Order LOINC Value
LACS1 Lactate, P 2524-7

 

Result ID Test Result Name Result LOINC Value
LACS1 Lactate, P 2524-7