Fetomaternal Hemorrhage and RhIG Dose Calculator

About Fetomaternal Hemorrhage and RhIG Dose Calculator

Fetal bleed volume and number of Rh immune globulin vials. The Fetomaternal Hemorrhage and RhIG Dose Calculator on Picscaler gives you the answer instantly in your browser, with no sign-up.

Inputs: Fetal cells (Kleihauer-Betke) (%) and Maternal blood volume (mL). Results shown: Fetal bleed (whole blood) and RhIG vials (300 ug).

Formula: Bleed (mL) = fetal cell fraction x maternal blood volume; vials = bleed / 30, rounded (decimal below 0.5: round down, else up) then add 1. One 300 ug vial covers 30 mL of fetal whole blood. Follow your blood bank policy.

This tool is for education and information. It does not replace clinical judgement, so confirm results against your laboratory's reference ranges and local guidelines.

How to use Fetomaternal Hemorrhage and RhIG Dose Calculator

1. Enter Fetal cells (Kleihauer-Betke) (%) and Maternal blood volume (mL).
2. Press Calculate.
3. Read Fetal bleed (whole blood) and RhIG vials (300 ug) in the result table.
4. Use the formula and notes under the result to check the working.

Frequently asked questions

Is Fetomaternal Hemorrhage and RhIG Dose Calculator free?

Yes. Fetomaternal Hemorrhage and RhIG Dose Calculator is completely free to use on Picscaler.

Do I need to create an account?

No. You can use it straight away without signing up.

Is my data safe?

Your input is processed in your browser on your own device and is not uploaded to Picscaler.

Can I use it for medical decisions?

No. It is an educational aid and does not replace professional medical judgement.