The distinction between organic and inorganic carbon compounds, while useful in organizing the vast subject of chemistry... is somewhat arbitrary. Organic chemistry is the science concerned with all aspects of organic compounds. Organic synthesis is the methodology of their preparation.
No, it is not possible to contract the typical STDs, such as syphilis, gonorrhea, chlamydia, hepatitis B, etc. from wearing someone else's dirty underwear. However crabs and scabies, may be spread in this fashion.
In addition, you will have a blood test, urine analysis, and urine culture. If sexually transmitted diseases are suspected, your doctor may test for them. And if thereâs a chance that the blood may have come from your partner, your doctor may suggest a condom test: ejaculate is collected in a condom and then examined for blood.