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Test Code LDH Lactate Dehydrogenase, LAB96

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements

Container/Tube:

Preferred: Green-top (heparin) tube

Acceptable: Gold-top serum gel tube or plain red-top tube

Specimen Volume: A minimum sample volume of 2.2 µL plus a dead volume is required for testing

Stability: Separated specimens should be analyzed immediately. Specimens are stable 4 days at 2-8 ⁰C.

NOTE: Certain disease states (e.g., hepatopathy, diseases of skeletal muscle, malignant tumors) are unstable and may increase LDH levels in cooled or frozen samples.or kept at room temperature or refrigerated

                

 

Reference Values

Serum/Plasma:

0-30 Days: 225-600 U/L

1 month - 2 years:  180-435 U/L

2-15 Years: 120-300 U/L

 

Males: 15+ Years: 135-225 U/L

Females:15+ Years: 135-214 U/L

 

Body Fluid: No reference range

Day(s) Test Set Up

Monday through Sunday

Useful For

Elevated serum levels of LDH have been observed in a variety of disease states. The highest levels are seen in patients with megaloblastic anemia, disseminated carcinoma and shock. Moderate increases occur in muscular disorders, nephrotic syndrome and cirrhosis. Mild increases in LDH activity have been reported in cases of myocardial or pulmonary infarction, leukemia, hemolytic anemia and non-viral hepatitis.

Methodology

Photometric measuring the increase in absorbance

Test Classification and CPT Coding

83615

Report Available

STAT within 1 hour upon receipt

Routine within 2 hours upon receipt