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Test Code LD_I Lactate Dehydrogenase (LDH) Isoenzymes, Serum

Profile Information

Test ID Reporting Name Available Separately Always Performed
LD Lactate Dehydrogenase (LD), S Yes Yes
LDI LD Isoenzymes, S No Yes

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Serum


Necessary Information


Patient's age is required.



Specimen Required


Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Specimen Volume: 2 mL divided into 2 tubes each containing 1 mL


Specimen Minimum Volume

0.75 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Ambient (preferred) 7 days
  Refrigerated  48 hours

Reference Values

LACTATE DEHYDROGENASE (LD)

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

 

LD ISOENZYMES

I (fast band): 17.5-28.3%

II: 30.4-36.4%

III: 19.2-24.8%

IV: 9.6-15.6%

V (slow band): 5.5-12.7%

Day(s) and Time(s) Performed

LD: Monday through Sunday

LD isoenzymes: Monday, Wednesday, Friday

CPT Code Information

83615-LD

83625-LD isoenzymes

Reject Due To

Gross hemolysis Reject
Gross lipemia OK

Method Name

LDI: Electrophoresis Densitometry

LD: Photometric Rate

Forms

Biochemical Genetics Patient Information (T602) in Special Instructions