Does blood in urine affect a pregnancy test?

No. The pregnancy test detects presence of human horionic gonadotropin (hcg), which is a hormone and is not affected by the presence of blood. Excessive amounts of blood in the urine, though, may obscure the screen of the test piece, but will not affect the result itself.

Related Questions

Blood in urine then passed sac 4 weeks later. Took hCG test 3 weeks later came back negative. Was it a miscarriage?

Miscarriage ? Passing tissue with a negative HCG (serum) test would suggest that you may have had a miscarriage if you had a positive HCG test initially. Miscarriages are very common especially for first pregnancies, mostly without most women knowing that they were pregnant.. About 30-40 percent of first pregnancies end in early miscarriage., and most subsequent pregnancies are normal. Read more...

Had blood in urine then passed sac with white tissue 4 weeks later. Got hCG test 3 weeks after it was negative. Was this miscarriage?

May not be from urin. You had your HCG shut that could sometime caused vaginal bleeding and may be the spot you discovers might not be from urine the shut does not effect kidney see your GYN and they can assure or run a urine test with catheter to make sure it is from urine if it is they will run the appropriate testing good luck. Read more...
Possibly but unsure. As many as 1/3 of all late periods result in a spontaneous/1st trimester abortion that young women are often never even aware of. Most times, it is impossible to verify whether a miscarriage actually took place because we're not looking for that without an announced pregnancy first. What you are describing seems plausible, but I would suggest a GYN exam to make sure there is no other pelvic issue. Read more...