Had a urinalysis. says "moderate" amount of hemoglobin in urine. what could cause that? i have no other symptoms except back pain at times?

I would like see the full urinalysis report. Is this occult blood rather than free hemoglobin? Occult blood could be from vaginal contamination of the urine specimen. I would recommend obtaining a clean catch urine sample and have a complete urinalysis including a microscopic exam of the urine sediment. This would determine whether there a red blood cells in your urine which would need investigati

You should get another urinalysis with microscopic exam. Dip sticks are often false positive.