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Lactate Dehydrogenase (LD), Total, Serum

Performing Laboratory

Providence Alaska Medical Center


Enzymatic Rate

Specimen Requirements

Draw blood in a gold-top (serum gel) tube(s). Spin down, separate plasma from cells, and send 2 mL (minimum volume:  0.3 mL) of serum at room temperature. DO NOT REFRIGERATE. Avoid hemolysis.


Plasma samples are not acceptable due to significant bias from serum samples.



Draw blood in a red-top serum tube(s).

Spin down, separate serum from cells, and send 2 mL (minimum volume:  0.3 mL) of serum.

Samples should remain at room temperature.  Do NOT refrigerate


Avoid hemolysis. Samples with more than 1+ hemolysis will be rejected.

Reference Values

0 minutes - 5 years:  140-304 IU/L
5 -10 years:  155-290 IU/L
10 -15 years:  115-257 IU/L
15+ years:  140-271 IU/L

0 minutes - 5 years:  142-297 IU/L
5 -10 years:  142-261 IU/L
10 -15 years:  122-234 IU/L
15+ years:  140-271 IU/L


Sample stabile for 24 hours at room temp only.

Day(s) Test Set Up

Monday through Sunday

Available STAT

Test Classification and CPT Coding



Estimated turnaround time 35 min