The researchers collected urine samples from the mothers twice during pregnancy and within 24 hours of birth and from the children at ages one, two and three. (scientificamerican.com)
If possible, try to collect a fresh urine sample in a clean plastic cup to bring with you to the veterinary practice. (texaswestveterinarian.com)
There are important but «dirty» tasks like picking up feces, cleaning surgical instruments and getting urine samples for lab testing. (drmartybecker.com)