<s>[INST] Hello doctor, Is beta blood hCG test (quantitative) done post 12 days of missed periods considered as accurate? My hCG level came less than 2. Does it mean that I am not pregnant. [/INST] Hello. Based on the present hCG levels, it suggests that you are not pregnant at present (or today), as beta hCG level is quite low. But if you frequently have irregular periods and there had been history of sexual contact, (and if you had delayed ovulation then there may be chances of pregnancy, or in other words chances of beta hcg increasing in next few days , depending on the time of ovulation and sexual intercourse). And if your cycles have been previously regular, and if this is the first time it got delayed, then you need to evaluate for the causes of it. Please get back to me if you have further queries with the exact timeline of events and your suspicions based on the event. Meanwhile you can take medication for withdrawal periods as already 12 days have lapsed from your expected date, or you could wait for another 3-4 days, and if still not getting periods you can start taking it and evaluate yourself for the cause for delayed periods. Ultrasound abdomen and pelvis, complete hemogram, thyroid profile, serum prolactin level. Tablet Meprate or Deviry 10 mg twice daily for 5 days and then stop. (This medication is not harmful even in case you turn out to be pregnant later). To wait for withdrawal bleed within next 7-10 days. To get blood tests done on 2nd or 3rd day of periods. </s>