03-19-2007, 06:48 AM
A while back I had a PSA (Prostate specific antigen) test, and the result was given in ng/ml (nanograms per milliletre I believe). Recently I had another test and the result was given in ug/L (ug??? per Litre presumably). Is the second the same as the first, or if not how do I compare them? What does ug mean?