: This blood test can be done as early as 10 weeks. It analyzes small fragments of fetal DNA in the mother's blood to determine chromosomal health and the baby’s sex.
: While highly accurate, these are invasive procedures usually reserved for detecting genetic conditions rather than solely for gender identification. Common Myths & Old Wives' Tales gender calculator
Several physical signs are frequently cited as "natural calculators," though they are largely anecdotal: : This blood test can be done as early as 10 weeks
: Typically performed between 18 and 22 weeks, the mid-pregnancy anatomy scan is the most common way to identify gender. Earlier scans around 11–13 weeks may use the "Nub Theory," which examines the angle of the genital tubercle, though it is less definitive than later scans. gender calculator