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Test Code SQ LDH, EPIC LAB96 Lactate Dehydrogenase (LD), Plasma


Ultraviolet (UV) (Lactate to Pyruvate)

Performing Laboratory

Meriter Laboratories

Specimen Requirements

Specimen Type: Plasma
Container/Tube: Light-green top (lithium heparin gel)
Specimen Volume: 1 mL
Collection Instructions: Plasma must be free from hemolysis and cells.

Additional Information: In connection with certain diseases (eg, hepatopathy, diseases of skeletal muscles, malignant tumors), the LDH-4 and LDH-5 isoenzymes portions are increased and unstable in cooled and frozen specimens; this may lead to an incorrect LDH value in specimens drawn from patients suffering from such diseases.

Specimen Transport Temperature


Reference Values


<1 year: 235-557 U/L

1 year: 235-414 U/L
2-4 years: 211-384 U/L
5-9 years: 187-319 U/L
10-13 years: 163-295 U/L
14-15 years: 152-271 U/L

≥16 years: 104-247 U/L

<1 year: 183-421 U/L
1 year: 183-315 U/L
2-4 years: 165-293 U/L
5-11 years: 187-295 U/L
12-15 years: 128-247 U/L

≥16 years: 104-211 U/L

Day(s) Test Set Up

Monday through Sunday

Specimen Requirements Additional Information

Specimen Stability:

1. Plasma is stable for 7 days at 15° C to 25° C.

2. Plasma may be stored for 4 days at 2° C to 8° C or 6 weeks at -20° C.

Test Classification and CPT Coding