Understanding CRL Measurements at 6 Weeks 4 Days of Pregnancy

The length of the crown-rump (CRL) is a measurement of the embryo or fetus from the top of the head to the bottom of the buttocks, and is used to estimate the gestational age. At 6 weeks and 4 days of pregnancy, the CRL is typically around 6 to 8 millimeters. Therefore, a CRL of 8.2 mm is within the expected range for 6 weeks and 4 days of pregnancy.