A measure of the length of the fetus from the head top to the bottom of the torso is known as crown-rump length (CRL), which precisely calculates the gestational age during early pregnancy. It is measured after excluding the yolk sac and the extremities and determines the gestational age between the sixth and thirteenth weeks. A fetus with a CRL above seven should have cardiac activity, failing which is termed as a missed miscarriage.
All the answers published in this website are written by verified medical doctors, therapists and health experts. The Content has been moderated by iCliniq medical review team before publication. Post your medical clarifications on iCliniq by choosing the right specialty and get them answered. Your medical queries will be answered 24/7 by top doctors from iCliniq.
My cousin underwent IUI, but there is no heartbeat. Why?
Query: Hello doctor,My cousin had her last period on the 10th of last month and got her IUI done on the 26th. Her hCG levels increased (doubled) in the blood test. Now, at six weeks, she got an ultrasound scan, and there has been no heartbeat till now. Is it too late? What are the chances of the pregnancy ... Read Full »
Answer: Hello, Welcome to icliniq.com. Six weeks can be a little too early to diagnose pregnancy by a scan. If the heartbeat is not detected, it is advised to repeat the scan after ten days to confirm the pregnancy. This is because, at times, there could be a possibility of delayed conception. The oth... Read Full »
How is the gestational age calculated?
Query: Hi doctor, My question is, does every early ultrasound use CRL to measure the baby and to check for gestation and not my LMP? As I could do that myself. Also, I had unprotected sex with someone but was quite careful not to have any semen inside me. I then had my period, and my menstrual cycle was sh... Read Full »
Answer: Hello, Welcome to icliniq.com. I have read your query and will guide you in your case. Let me guide you with the information you gave. Your normal menstrual cycle length is 25 days, and you had a period within the last ten days three months back. It means the expected period in the subsequent mont... Read Full »
How to calculate the gestational age accurately?
Query: Hi doctor, My CRL is 5.18 cm. How old is my baby now? How can I get my gestational age accurately? Read Full »
Answer: Hi, Welcome to icliniq.com. The CRL of 5.18 cm corresponds to 11 to 12 weeks of gestation. A difference of two to three days is possible depending on the position of the baby and the measurement of the caliper placement. Ideally, we recommend a first scan to know the exact dating and to calculate ... Read Full »
Ask a Specialist Now
Get Expert advice/consultation in 3 stepsChat with a Doctor
Starting @ just $59