Is it necessary to use morning urine for pregnancy test? Can urine from other times be used for pregnancy test?

When using a pregnancy test stick to detect pregnancy, the instructions will say to use morning urine for the test. Why is this? Why can't urine from other time periods be used? Is it necessary to use morning urine for pregnancy testing? Why is morning urine better for pregnancy testing?

Is it necessary to use first-morning urine for pregnancy test?

It is best to use first-morning urine for pregnancy testing.

Although urine from other time periods can also be used, the concentration of morning urine is relatively high. Using morning urine for pregnancy testing can increase the reliability of the results. However, different people have different physical conditions, so the specific situation also varies from person to person.

Why is morning urine better for pregnancy testing?

When testing pregnancy with morning urine, the important indicator for detection is the specific hormone secreted by the placenta - hCG, which is human chorionic gonadotropin. After a woman becomes pregnant, hCG enters the urine and blood. In the early stages of pregnancy, the hCG content in urine is low and is not easy to detect. When a person is asleep, the urine is concentrated through the body's metabolism, and more hormones are secreted during sleep, so the hCG concentration in morning urine is higher than at other times, and early pregnancy detection is more accurate.

After a woman is fertilized, the hcg content is detected in her urine to determine whether she is pregnant. hcg is produced by the tissues surrounding the embryo, which eventually develop into the placenta. When the urine soaks the test paper, it passes through a layer of antibodies, which react with chorionic hormone. If the urine contains chorionic hormone, the reaction is positive, indicating pregnancy.

When is the best time to do a urine pregnancy test?

HCG in urine will only be detected when the amount reaches a certain level. If the test is too early, the amount of HCG will not reach the detection standard.

Therefore, if you want to use urine to test for pregnancy, you should wait at least one week after your menstrual period to test. If you want a more accurate result, you can wait 11 days before testing again.