Ok i am 33 and a half weeks pregnant. Yesterday i was sent for a doppler ultrasound scan to check my baby for anemia because i tested positve for 5th disease and my amniotic fluids were high.

When we went yesterday the calculation was an MoM of 1.69 which is in the severe anemia range form what i gather. My doc decided to give me steroids incase of early delivery and scheduled me back today for another scan.

Well today the levels looked closer to normal but possibly still slightly elevated and led my doctor to believe yesterdays test may have been a false positive.

My question is what is most likely the case a false positve or false negative after a positive. Also, can fetal anemia vary that much daily. Could the reading have been accurate both times?

The tech said the baby was laying on her opposite side yesterday, could this have anything to do with the different numbers? I am very concerned and want to no what to expect when i go back friday for yet another scan.

The scan checks the blood flow in the middle cererbreal artary in the brain and they judge the anemia on how quickly the blood is flowing…apparantly the speed dropped in half from yesterday.

Filed under: Fetal Doppler FAQs

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