Imagine this scenario. You have been having unprotected sex.Your periods delay and you start suspecting that you are pregnant.You rush to the nearest chemist and purchase a pregnancy test.You get back to the house and take a sample of your urine. You dip the tip of the kit as instructed on the user manual. The test turns negative.
Two, three or four days later, you still haven’t gotten your periods. You are unsettled. You rush back to the Chemist for another pregnancy test kit. You do a second test and the results turn out negative again. But you are still not yet convinced.
A month later, you start developing signs and symptoms of pregnancy. You do a third test and the results stare back at your shocked face. You are pregnant.You start asking yourself many questions. But how? The pregnancy test kit is usually 99 per cent accurate. What happened?
The answer is very simple. According to www.healthxchange.sg, a pregnancy test kit works by detecting the amount of human chorionic gonadotrophin in urine (HCG). In early stages of pregnancy, the concentration of this HCG maybe too low for the kit to detect. This explains why test results could turn out negative in the early stages and positive in the later stages of pregnancy. As the pregnancy progresses, the level of HCG also increases.
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