After miscarriage and 0 hcg Does it make hard for pregnancy tests to read accurate?

After miscarriage and 0 hCG does not make it harder for pregnancy tests to read accurately. When hCG levels return to 0 after miscarriage, pregnancy tests will read negative. It may take several weeks for hCG levels to drop below the detectable range, but once they do, pregnancy tests will accurately reflect the absence of pregnancy.