S. KohengkulV. TanphaichitrV. MuangmunN. TanphaichitrMahidol University2018-03-222018-03-221977-01-01Fertility and Sterility. Vol.28, No.12 (1977), 1333-1336001502822-s2.0-0017606655https://repository.li.mahidol.ac.th/handle/123456789/10314The level of L-carnitine was determined in normal human seminal plasma and sperm. Most of the L-carnitine is concentrated in the seminal plasma and its level is about 10 times higher than that in blood plasma. About 50% of total L-carnitine in normal human seminal plasma exists in the form of acetylcarnitine. Similar studies were also carried out in oligospermic and azoospermic human seminal plasma. The level of L-O-acetylcarnitine in both types of infertile samples is significantly lower than that in normal samples. On the other hand, the level of free L-carnitine is the same in fertile and infertile seminal plasma.Mahidol UniversityMedicineArticleSCOPUS10.1016/S0015-0282(16)42979-1