Menstruation has not arrived for 5 days. Can pregnancy tests detect pregnancy?

Patient's question:

No

Doctor's answer:

If menstruation is delayed for more than 7 days, it may be related to pregnancy. A urine test can be performed as early as 2 days before the onset of menstruation. Alternatively, blood HCG can be checked 7-9 days after conception for more accuracy. An ultrasound can detect a gestational sac as early as 35 days after pregnancy.