Andrew Huberman· PhD
There's a minimum number or concentration of sperm that they'd like to see if a couple is going to use IVF, in-vitro fertilization. And typically that's going to be about 15 to 20 million per mil of sperm or semen. And typically they want to see somewhere between 2 and 5 milliliters of semen, overall, in a given ejaculate after a 72 to 48 hour abstinence period