No single serum β-HCG level is diagnostic of an ectopic pregnancy.
Serial serum β-HCG levels are necessary to differentiate between normal and abnormal pregnancies and to monitor resolution of ectopic pregnancy once therapy has been initiated.
In ectopic pregnancies, β-HCG levels usually increase less.
Mean serum β-HCG levels are lower in ectopic pregnancies than in healthy pregnancies.
Common testing procedures include amniocentesis, ultrasonography including nuchal translucency ultrasound, serum biomarker testing, or genetic screening.
In some cases, the tests are administered to determine if the fetus will be aborted, though physicians and patients also find it useful to diagnose high-risk pregnancies early so that delivery can be scheduled in a tertiary care hospital where the baby can receive appropriate care.
Transvaginal ultrasonography, or endovaginal ultrasonography, can be used to visualize an intrauterine pregnancy by 24 days post ovulation or 38 days after the last menstrual period (about 1 week earlier than transabdominal ultrasonography).
An empty uterus on endovaginal ultrasonographic images in patients with a serum β-HCG level greater than the discriminatory cut-off value is an ectopic pregnancy until proved otherwise.
Screening can also be used for prenatal sex discernment.
Most parents love to have this test because it gives them an assurance that their baby is doing fine and that they need not to worry about a miscarriage or anything unusual.
It is highly recommended that pregnant women have the first ultrasound test at the seventh week of pregnancy. However, the most common ones are because you need to ensure that the health and development of the embryo is good and to give you the assurance and the comfort that everything is fine.
This is the period that the embryo is transformed into a fetus.
This implies that if you go for a 7 weeks pregnant ultrasound test, you will get the chance to see the development of your baby.