Ask a doctor for a urine test and they can measure your blood loss.
Urine, blood or breathalyzer tests
Drops significantly.
ADH
atrial natriuretic peptide (ANP)
tests that are done to measure the levels of uric acid in blood serum or in urine.
Refractometer
Blood is not "converted" into urine. Urine is EXTRACTED from the blood by the two organs called the "kidneys".
Urea is one of the substances in urine, and urine is in your blood stream until the kidney extract the urine from your blood.
Since this is the first answer to this very recently asked question, I would have to guess that the answer is "no".Blood and urine tests only measure specific biological processes - like the function of one's liver, or the amount of calcium in the bloodstream, etc. Since the effect of having had intercourse for the first time does not result in a biochemical change - i.e. it does not prompt the increase in hormones etc - then "loss of virginity" could not be measured by a blood or urine test.Unless, of course, if having had intercourse for the first time results in pregnancy - since that certainly can be measured by a blood or urine test!
Blood and urine are spun on centrifuges.
I believe I would move out of my comfort zone and go to a urologist for this one. This could be dangerous.
painless hematuria ( blood in urine is the earliest symptom )