Determination of lactate dehydrogenase isoenzyme-X (LDH-X)
isoenzyme activity
LDH-X activity is an indicator of the testicular function
(Foster, Blackburn, Moore, & Lloyd,
1986), and can be analyzed spectrophotometrically at 340 nm by
determination of NADH formation using DL- α Hydroxycaproic Acid (LDH-X
isoenzyme-specific substrate (Cheever,
Weigel, Richards, Lal, & Plotnick, 1985).