contais 68 mg of etonogestrel. Studies have revealed that hormonal
contraceptives do not affect the results of urine pregnancy
tests or blood/serum HCG
level test. These tests are sensitive to levels of HCG which is produced during pregnancy only. You can get false negative results with urine pregnancy tests
done very early in pregnancy. These kits are calibrated ones and unless the hormone level in urine reach a certain level, they do not show positive results. Urine pregnancy test kits usually start showing positive results after about one week of missed period.. The test should always be done on early morning first urine sample to get accurate results as pregnancy hormone HCG is believed to be in high concentration in that sample, and you should avoid lot of fluid intake in the night before taking the test.