What is the percentage rate of pregnancy tests??

[siefer]

My girlfriend may be pregnant and I would like to know how accurate pregnancy tests are if I bought them for her at a place like walgreens? Please tell me what you know and not what you think. Thank you

[avman]

Home pregnancy tests are up to 99% accurate for a positive result. If it says you are pregnant, you are VERY likely pregnant.

 

The accuracy is a bit less for a negative test, because some women don't produce enough hormone early in a pregnancy. I've heard numbers quoted from 90-95% accuracy for a negative result.

[The Morrigan]

If you wait til about 3 days after a skipped period and follow the instructions - they're very accurate for a positive result, as avman said. It is far far more likely to get a false negative from either not using first thing in the morning urine (the concentration of hormones is much higher first thing in the morning) or being overanxious and taking the test before your body is producing adequate HCG (human pregnancy hormone) for the chemical in the test to react. If you're unsure - take a second test a few days to a week later - if the results match and they're positive, you can be pretty damn sure it's correct. If the first was negative and second was positive, same deal, it's extremely rare to get a false positive. If both are negative, and she still hasn't had her period, make an appointment, first, they can do a blood test, which is more sensitive to even a low hormone level, and second, if there's something else that's causing the delay, they can check for other problems.