Answer:
Urine
Explanation:
Urine is a compound which comprises of mainly 95% of water and other compounds such as urea etc. Urine analysis usually involves color inspection an other Chemical tests. This is what makes it different from blood which is also another body fluid.
After the necessary tests have been done and there is an abnormality detected the technician then makes us of his microscope to look for cells, microorganisms, and crystals which may have caused the issue.