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Kidney size may help date pregnancies more accurately

NCT ID NCT07188324

Knowledge-focused Sponsor: Cairo University Source: ClinicalTrials.gov ↗

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
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Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

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Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

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Status unknown
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First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at whether measuring the length of a fetus's kidney can help estimate how far along a pregnancy is. Researchers measured kidney length in 100 healthy pregnant women between 24 and 40 weeks and compared it to standard measurements like head size and belly size. The goal was to see if kidney length is a reliable way to determine gestational age, which is important for timing certain tests and treatments.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

100 people

The number who actually took part.

Started

Jul 2024

Finished

Feb 2026

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Healthy pregnant women at their late second and third trimester by reliable LMP who will meet the inclusion criteria, attend the fetal medicine Unit at Cairo University Hospital and consent to participate in this study.

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Female participants only

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * All healthy women with viable normal singleton pregnancies in their late second and third trimesters (24 weeks - 40 weeks) calculated from their last menstrual period. * Women who will sure of the dates of their last menstrual period (1st day) and/or those with first obstetrics dating using crown rump length (CRL). 3- Women with regular menstrual cycle in last three months before their last menstrual period. Exclusion Criteria: * Women with high-risk pregnancies such as preeclampsia, diabetes, hypertension, polyhydramnios. ❖ Maternal: * Multiple pregnancies. * Gross maternal obesity. ❖ Fetal: * Fetus with congenital anomalies especially renal anomalies. * Fetuses with abnormal renal morphology (a genesis, hypoplasia, cysts, nephromegaly, polycystic kidney, hydronephrosis, etc.… * Fetuses with renal pelvic dilatation of 5 mm or greater, obscured adrenal and renal border. * Fetus with growth abnormalities (intrauterine growth retardation or macrosomia).

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As listed by the trial registrant

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Fetal conditions

Contacts and locations

Locations

  • Faculty of Medicine, Cairo University

    Giza, Cairo Governorate, 4240310, Egypt

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