Test Code LD Lactate Dehydrogenase (LDH), Serum
Reporting Name
Lactate Dehydrogenase (LD), SUseful 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

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 Minimum Volume
0.25 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
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
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
83615
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
LD | Lactate Dehydrogenase (LD), S | 14804-9 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
LD | Lactate Dehydrogenase (LD), S | 14804-9 |
Report Available
Same day/1 to 3 daysReject Due To
Gross hemolysis | Reject |
Method Name
Photometric Rate Reaction