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Test Code LDH Lactate Dehydrogenase (LD), Plasma or Serum

Additional Codes

Epic Test ID

LAB96

Performing Laboratory

Bronson Laboratory Services-Chemistry

Reference Values

Pediatrics

0-4 days: 290-775 IU/L

4-10 days: 545-2,000 IU/L

10 days-24 months: 80-430 IU/L

Adults: 94-250 IU/L

 

Methodology

Spectrophotometric

Specimen Requirements

Submit only 1 of the following specimens:

 

Preferred

Specimen Type: Serum
Container/Tube: Gold top serum gel-Plain,
red-top tube is also acceptable.

Specimen Volume: 5 mL

Specimen Minimum Volume: 0.2 mL serum

Collection Instructions: Cause for
rejection includes hemolysis.

 

Alternate

Specimen Type: Plasma
Container/Tube: Green top (heparin)

Specimen Volume: 5 mL

Specimen Minimum Volume: 0.2 mL plasma

Collection Instructions: Cause for
rejection includes hemolysis.

Specimen Transport Temperature

Stability: 

Note: Heparinized plasma in gel separator tubes is less stable than serum and is only suitable for add-on testing up to 2 days following sample collection. 

LDH can be decreased upon refrigerated or frozen storage.

LDH is stable 7 Days at 15-25° C (room temperature). 
The sample may be refrigerated for 4 days at 2-8° C or 6 weeks
at -20° C.  However, in connection with certain disease
states (hepatopathy, diseases of skeletal muscles, malignant
tumors), the LDH-4 and LDH-5 isoenzyme portions are increased and
unstable in cooled and frozen samples; this may lead to falsely
decreased values in such patients). 

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

83615