BLUE TONGUE SKINKS

Hello everyone, i got my blue tongue out and when crawling on the towel i saw this. Now, it seem more like a gooish urate but im not sure about it. I mean i saw sperm from my male boa constrictor and it was easy to identify. But mybe im wrong? So i wanted to consult you guys about it i have a really close picture
Thanks alot everyone!!

Not a sperm plug. Appears to be a uncrystallized urate.

Thanks alot!