Released LDH in culture supernatants is measured with a 30-minute coupled enzymatic assay, which results in the conversion of a tetrazolium salt (INT) into a red formazan product.

释放出的乳酸脱氢于培养物上清中,可用联检法30分钟量。这种联分析导致四唑盐（INT）转化成红化合物。颜形成的量与裂解细胞的数目成正比。