blood

i have traces of blood when i finish urinating

[DoriSchatell]

Seeing blood in your urine ("hematuria") is scary, and it can mean a problem with the kidneys--but it doesn't necessarily. There are other causes for it (like heavy exercise), and the way to tell the difference is to go to the doctor and get a urinalysis.

Here are a couple of websites that can tell you more:
• http://www.mayoclinic.com/health/blood-in-urine/DS01013
• http://www.nlm.nih.gov/medlineplus/e...cle/003138.htm