1 Testosterone-which determines the âsexâ of the brain in the fetus, stimulates the descent of testes before birth, regulates sperm production promotes the development of secondary sexual characteristics at puberty. 2  Inhibin-which inhibits secretion of FSH from the pituitary gland.
Adipex can be detected in urine, saliva, or hair. If the drug test is a urine test or saliva test, the drug will stay in the system for only about 2 days. However, like most drugs, the hair test will detect it after as long as 90 days.
Blood levels generally depleted in five half lives believe 60 hours. 4 How long does half of one 37.5 mg phentermine tablet stay in your system which would show up on a drug test. Half life is 20h: The drug's half life is 20 hours, meaning that after 20 hours, half of the dose has been eliminated. 20 hours after that, 3/4 of the dose has been eliminated and 20 hours after that 7/8 of the drug has been eliminated.