War also reached No. 23 on the Top Pop Catalog album chart and became U2's first Gold album in the US, eventually being certified multi-platinum by the RIAA with 4 million units sold. It also earned a Gold record in Switzerland and Silver record in the UK. In the Hot Press Reader's Poll, it was voted No. 1 best album and best LP sleeve. UK magazine New Musical Express voted both the album and sleeve as No. 3 in its annual poll. And in the New Zealand Rip It Up Poll, War was voted the No. 1 album.
It means picograms per milliliter (pg/ml). The picograms would refer to some type of substance dissolved in a solution which is represented by the milliliters. This is referred to as a concentration. For example, it could be the measure of the amount of a drug in the blood stream. Picograms are 1 gram x 10 raised to the -12........a very very small number. Milliliters is 1/1000 of a liter. Whatever it is referring to, it is in a very low concentration. I would go to another vet for a second opinion if I were you.
Penile plethysmograph. Penile plethysmography (PPG) or phallometry is measurement of bloodflow to the penis, typically used as a proxy for measurement of sexual arousal.