What is the earliest time to check PSA after prostatectomy?  

The half-life of PSA in the circulation is about 3 days, so there is no point checking PSA within the first 15 days (5 half-lives) as any detectable PSA at that point may just represent residual PSA that has yet to be cleared. Most surgeons I have worked with generally wait 4-6 weeks, which should b...