There are now lots of home pregnancy tests that can be used before your period is due.
Most home pregnancy tests are designed to give a positive result in most women by the day that your period is due. Now we also have lots of home pregnancy test kits available that can be used before your period is due.
Home pregnancy tests work by measuring the concentration of a pregnancy hormone Human Chorionic Gonadatrophin (hcg for short) in a urine sample.
The lower the amount of this hormone that the pregnancy test can detect , the earlier the pregnancy test can be used.
Home pregnancy tests vary in their sensitivity. Many pregnancy tests detect 25mIU of hcg in urine. In recent years manufacturers have been producing pregnancy test kits that detect even lower levels of hcg in urine.
The 10mIU pregnancy test kit is one of the most sensitive pregnancy tests available as it can detect just 10mIU of hcg in a urine sample, which means it can detect pregnancy earlier than a standard 25mIU test.
Pregnancy tests come in a range of sensitivities, as a general rule, the lower the sensitivity, the earlier the test will give a positive result. The most sensitive home pregnancy tests available is the ultra 10 mIU test.
We know lots of people wish to test early, and for some, with irregular or erratic cycles, knowing when to test can be challenging.
In this situation, the earliest time at which hCG is possibly detectable is 8 -10 days after conception. This is dependent on early implantation and placental development to a level able to cause urinary concentrations of hCG in excess of the sensitivity of the pregnancy tests used.
If you do decide to test early, always use your first morning sample, use an ultra sensitive pregnancy test, and be prepared to re-test at 48 hr intervals, and if you do get very early positive results, always confirm these a few days later (as sadly some very early implantations do not continue )