Twin Troubles
Can Twin Pregnancies Cause Low Fetal Fraction in NIPT?

Learn how twin pregnancies can lead to low fetal fraction in noninvasive prenatal testing (NIPT) and affect test accuracy.

Confirming Down Syndrome
What Tests Confirm Trisomy 21 (Down Syndrome) During Pregnancy?

Learn about the key prenatal tests—NIPT, CVS, and amniocentesis—that confirm trisomy 21 (Down syndrome) with high accuracy.