I am a bus driver and have had three physicals in three weeks for certification.  All required a urine test for drug screening.  On the third physical, they said that I had a trace of blood in my urine.    The other two physicals  previously showed no symptoms.  What could cause this, is this cause for concern and how soon should I get rechecked?  My last physical was two weeks ago.
HelloThanks for writing to ChatDoctorTraces of blood in urine may be due to many reasons. It may be due to infection, calculus,trauma, tumour etc. You need proper clinical examination and investigations. You need routine hologram, RBS,Ultrasound of abdomen. Further investigation like CT Scan can be done if needed. Treatment depends upon clinical findings and investigation reports. Hope I have answered your query. Take Care Chat Doctor.