Specimen:

Serum

Collection Medium:

Minimum:

Preferred Minimum:  1 mL serum
Adult/Pediatrics Absolute Minimum:  0.6 mL serum

Analytic Time:

2 working days (upon receipt)

Reference Range:

Components                     Reference Interval
LD-1                           14-27% of total
LD-2                           29-42% of total
LD-3                           18-30% of total
LD-4                            8-15% of total
LD-5                            6-23% of total
Lactate Dehydrogenase, Total   0 up to 30 days:  200-465 U/L
                               30 days-17 mos:   200-450 U/L
                               18 mos-10 yrs:    165-430 U/L
                               11 yrs-16 yrs:    127-287 U/L
                               17 yrs & over:    105-230 U/L

Comments:

Hemolyzed samples and serum, which has not been separated from
cells, show elevated LD-1 and LD-2.  LD-4 and LD-5 are labile at low 
temperature and erroneously low in samples that have been frozen.

Methodology:

Enzymatic/Electrophoresis

CPT Code:

83615 LD Total, 83625 LD Isoenzyme