A clean catch urine sample or specimen is one of the least invasive procedures for a urine culture or urinalysis. The clean catch method aims to prevent bacteria from the skin of the penis or vagina ...

A urine cytology test looks at the cells in your urine under a microscope. It can help your doctor diagnose some forms of urinary tract cancer. You may need one if you've had blood in your urine.

It seems a simple enough question, but nowhere that I have looked gives any clarification on it. Loads of websites show a graded series of colours, showing you what colour your urine should normally ...