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Rh(D) incompatibility screening (blood typing and antibody testing)

Pregnancy

PregnancyFirst prenatal visit; repeat antibody testing later in pregnancy if applicable5–10 minutes

Blood type and antibody screening identify pregnancies at risk of Rh(D) incompatibility so complications can be prevented.

Guidance for your location

Location
Country
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Region-specific program details are not available for this location yet, but you can still use the general profile information.
Recommended Age
Pregnancy
Frequency
First prenatal visit; repeat antibody testing later in pregnancy if applicable
Duration
5–10 minutes

Overview

Rh(D) incompatibility can occur when a pregnant person is Rh-negative and the fetus is Rh-positive. If an Rh-negative person becomes sensitized (develops antibodies), those antibodies can affect the fetus in a current or future pregnancy. Prenatal care includes blood typing and an antibody screen early in pregnancy. If the pregnant person is Rh-negative and not sensitized, an antibody screen is typically repeated later in pregnancy and preventive treatment may be recommended.

Who Should Get This Screening

  • Pregnant people, as part of routine early prenatal bloodwork.
  • Repeat antibody testing is commonly done in unsensitized Rh-negative pregnancies later in pregnancy (timing varies).

What to Expect

A blood sample is taken to determine blood type (including Rh status) and to screen for antibodies. If antibodies are present, your care team discusses monitoring and next steps.

How to Prepare

Follow these tips to prepare for your screening

  • No special preparation.

Benefits

  • Identifies Rh-negative pregnancies that need monitoring and prevention steps.
  • Helps prevent hemolytic disease of the fetus and newborn in future pregnancies when managed appropriately.
  • Clarifies compatibility planning for transfusions and pregnancy care.

Things to Consider

  • Minor discomfort or bruising from blood draw.
  • Follow-up testing may be needed if results are positive or unclear.

Guideline Source: USPSTF Rh(D) incompatibility screening (see Guidance for your location section above)

This information is provided for educational purposes only and should not replace professional medical advice. Always consult with your healthcare provider for personalized recommendations.