Laboratory Test Information Guide

Details for Lactate Dehydrogenase,Plasma

Test Name: Lactate Dehydrogenase,Plasma
Alternate Name(s): LDH
LD
Laboratory: Core
Specimen Type: 4.5 mL Green (Lithium Heparin) top Vacutainer

Serum from a 5 mL Gold top or 6 mL Red top Vacutainer tube is also acceptable.

Pediatric:
0-2 years: 0.5 mL Green top Microtainer
2-10 years: 2 mL Green top tube
Collection Information: Collect blood aseptically in a Vacutainer tube.

The minimum volume required for pediatric samples is 0.2 mL.
Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: As required
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
4 hours
Stat
1 hour
 
Reference Range: Children:
0-20 days: <600 U/L
21 days-15 years: 300 U/L

Adult:
Male (>15 years): <225 U/L
Female (>15 years): <214 U/L
Effective Date: 2008-11-15
Revised Date: 2020-06-05
Critical Value:  
Interpretive Comments: Increases occur due to necrosis of liver, skeletal muscle, red blood cells, bone marrow and malignancies. Very non-specific.

In healthy children, levels may be elevated up to 800 lU/L.
Special Processing:  
Comments: Hemolysis may cause falsely elevated results.
Method of Analysis: Enzymatic rate
Critical Information Required:  
Storage & Shipment: Lactate Dehydrogenase is stable in whole blood (unspun tube) on ice for up to 1 hour from collection. Lactate Dehydrogenase is not stable if refrigerated.
System Codes: 
Cerner
LD
 
Referred To:  

Questions? Comments? Contact Laura Gopaul