It's often stated that the cotton textile, mining or quarry industries are the oldest in the world. But one industry often gets forgotten in mention of our first professions as humans -- the study of urine. In this documentary series, we begin with the origins of urine testing: from taste to color, the simple urine test became a common, albeit primitive, method of detecting illness. Our episodes will outline the earliest urine tests to the invention of modern urinalysis by Al and Helen Free in the 1950s all the way to the future of urinalysis. Along the way, you'll learn about the importance of urine testing: a true liquid lens on our health.
