Pregnancy
First trimester
Also: CRL
Crown-rump length
Abbreviation: CRL
Ultrasound measurement from top of embryo/fetus to rump.
What This Means for You
Understanding Crown-rump length is an important part of your first trimester journey. During pregnancy, your care team will use this term regularly. Being familiar with it means you can ask better questions and feel more confident at your antenatal appointments.
Explore our Pregnancy hubGood to Know
Used mainly early in pregnancy.
Related Terms
Always consult your healthcare provider for personalised advice.
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Medical Disclaimer: This glossary is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional for diagnosis and treatment.