This is Dr. David
LD-I appears elevated in the serum about 24 to 48 hours after a myocardial infarction (MI), but is generally not as useful as troponin or creatine kinase-MB (CK-MB) for detection of MI, unless the MI occurred at least 24 hours prior to testing
Normally, LD-II is greater than LD-I; however, when a MI has occurred, there is a "flip" in the usual ratio of LD-I/LD-II from <1 to >1 (or at least >0.9). Use of the ratio for evaluation of patients with possible cardiovascular injury has largely been replaced by TPNT / Troponin T, Serum
your LD2 is higher than LD1
your LDH levels are not high enough to worry
it is not a sign of cancer
and it doesn't sound like you have had a heart attack.
different labs have different normal levels for LDH levels
I have given you other labs which say it is normal up to 333
let me know if you have other questions.
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