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Test Code LAB4362 LACTIC ACID W/2 HOUR REFLEX (x4)

Important Note

If result is greater than or equal to 2.0 mmol/L another Lactic Acid Level will automatically be ordered to be collected 2 hours after the initial result is completed. This reflex will continue as long as the result remains greater than or equal to 2.0 mmol/L for up to a total of 4 specimens.

Specimen Type

Sodium Fluoride (Gray Top Tube) on ice

Collection Instructions

Avoid the use of stasis (tourniquet) or having the patient pump their fist while drawing blood specimen. Store and transport on ice.

Specimen Volume

2 mL

Minimum Volume

0.3 mL

Turnaround Time

STAT: 1 hour
Routine: 1 hour

Test Schedule

Daily

Sample Stability

Room Temperature: 72 hours

Refrigerated: 14 days

Frozen: 38 days

Stability claims are for plasma after separation from the cells.

Specimen Processing

Spin ASAP

Plasma must be removed from the cells if testing will be delayed.

Method

Direct electrode measurement

Reference Ranges

LACTIC ACID, VENOUS

0 to 90 Days 1.1 - 3.5 mmol/L 
3 Months to 24 Months 1.0 - 3.3 mmol/L
2 Years to 18 Years 1.0 - 2.4 mmol/L
> 18 years 0.5-2.2 mmol/L

Consider severe sepsis if Lactic Acid is >2.0

Consider septic shock if Lactic Acid is >4.0

Synonyms

L-Lactate, Venous; Lactate, Venous; Lactic Acid Cascade with 2 hour reflexing

Test Components

Lactic Acid Level, mmol/L

CPT Codes

83605

Rejection Criteria

Samples not placed on ice immediately after collection.

Test Limitations

Values may elevate 20-50% after meals.