Does Donald Trump have low testosterone? What his very low PSA tells us

Donald Trump actually has a negative or normal PSA despite his doctor saying all of his tests are “positive.” This is a good example of why “only positive results” is undesirable. Trump’s PSA is reported as 0.15 and the cut off for a positive screen (a potentially worrying result) is 4.0 ng/ml. Trump’s PSA doesn’t really matter […]