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The two primary methods are testing for the female pregnancy hormone (human chorionic gonadotropin (hCG)) in blood or urine using a pregnancy test kit, and scanning with ultrasonography. [1] Testing blood for hCG results in the earliest detection of pregnancy. [2]
In general, it's best to wait until you've missed your period, and to take the test first thing in the morning. Learn how timing impacts accuracy from experts.
The results of the blood test are then combined with the NT ultrasound measurements, maternal age, and gestational age of the fetus to yield a risk score for Down syndrome, trisomy 18, and trisomy 13. First Trimester Combined Test has a sensitivity (i.e. detection rate for abnormalities) of 82–87% and a false-positive rate of around 5%. [74] [75]
Pregnancy detection can be accomplished using one or more various pregnancy tests, [76] which detect hormones generated by the newly formed placenta, serving as biomarkers of pregnancy. [77] Blood and urine tests can detect pregnancy by 11 and 14 days, respectively, after fertilization.
A new blood test can be performed in a pregnant person’s first trimester to help assess their risk of developing preeclampsia, a potentially life-threatening pregnancy complication.
Researchers said the fast and non-invasive technique could pave the way for a screening test for multiple forms of cancer. New blood test can spot breast cancer at earliest stages, say scientists ...