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HelpTest ID LD Lactate Dehydrogenase (LDH), Serum
Useful For
Investigation of a variety of diseases involving the heart, liver, muscle, kidney, lung, and blood
Monitoring changes in tumor burden after chemotherapy; lactate dehydrogenase elevations in patients with cancer are too erratic to be of use in the diagnosis of cancer
Testing Algorithm
For more information see Multiple Myeloma: Laboratory Screening
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
SerumNecessary Information
Patient's age is required.
Specimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions:
1. Serum gel tubes should be centrifuged within 2 hours of collection.
2. Red-top tubes should be centrifuged, and the serum aliquoted into a plastic vial within 2 hours of collection.
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Ambient (preferred) | 7 days |
| Frozen | 30 days | |
| Refrigerated | 48 hours |
Special Instructions
Reference Values
1-30 days: 135-750 U/L
31 days-11 months: 180-435 U/L
1-3 years: 160-370 U/L
4-6 years: 145-345 U/L
7-9 years: 143-290 U/L
10-12 years: 120-293 U/L
13-15 years: 110-283 U/L
16-17 years: 105-233 U/L
≥18 years: 122-222 U/L
Day(s) Performed
Monday through Sunday
CPT Code Information
83615
Report Available
Same day/1 to 3 daysReject Due To
| Gross hemolysis | Reject |