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Safe for both mother and baby
A suitable time for early preeclampsia risk screening during the first trimester is approximately between 11 and 14 weeks of pregnancy.
Missing first-trimester screening does not mean that you will develop preeclampsia, or that the condition can no longer be detected. However, it does mean that an important opportunity for early risk stratification has been missed.
From the second trimester onward, doctors can continue monitoring blood pressure, urine protein levels, and fetal growth. When clinically indicated, blood tests or biomarkers such as PlGF or the sFlt-1/PlGF ratio may also be used to support further assessment.
The most important step is to continue attending prenatal checkups as scheduled and inform your doctor about any personal risk factors you may have.
Not necessarily. Preeclampsia risk can be screened early during the first trimester, typically between 11 and 14 weeks. After that, blood pressure and overall maternal health should continue to be assessed during routine prenatal visits.
The risk of preeclampsia should be monitored throughout pregnancy, while specific preeclampsia tests should be performed when appropriate and as recommended by your doctor.
The risk of preeclampsia may be higher in pregnant women with one or more of the following factors:
- First pregnancy
- Obesity
- Advanced maternal age
- Previous history of preeclampsia
- Multiple pregnancy
- Family history of preeclampsia
- Chronic hypertension
- Chronic kidney disease
- Diabetes
- Systemic lupus erythematosus
- Antiphospholipid syndrome.
Having one or more risk factors does not mean that preeclampsia will definitely occur. These factors help doctors determine the appropriate level of monitoring and preventive care.
During pregnancy ultrasound, findings that suggest impaired placental function may be associated with an increased risk of preeclampsia. These may include an elevated uterine artery pulsatility index (PI) or the presence of early diastolic notching on Doppler ultrasound.
Later in pregnancy, fetal growth restriction or Doppler findings suggestive of impaired placental and fetal circulation may also suggest the preeclampsia testing.
However, doctors will interpret ultrasound findings together with maternal blood pressure, symptoms, and laboratory test results before deciding whether additional preeclampsia testing is necessary.
