Preferred Sample Type

FMH - Feto Maternal Haemorrhage

Suitable Specimen Types

  • EDTA Whole Blood

Specimen Transport

Standard transport to laboratory

Sample Preparation


Turnaround Time

24 hrs

Sample Stability

4°C for 3 days

FMH - Feto Maternal Haemorrhage

General Information

Large feto-maternal haemorrhages found by Kleihauer will be confirmed by flow cytometry. This test can only be performed by this technique if the mom and baby have differing rhesus blood groups. BCSH guidelines suggest that a foetal bleed of greater than 2ml on Kleihauer should be confirmed by flow cytometry.

Samples within HEFT will automatically be refered for FMH estimation by flow cytometry if found to be high by the Kleihauer method.

Suggested Anti-D dosage takes into account the uncertainty of measurement of FMH measured by flow cytometry in this laboratory. Click here for further information.

Download the FMH request form here



Please indicate any transfusion history or recent anti-D immunoglobulin


  • EQA Scheme?: Yes
  • EQA Status: NEQAS

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HTA licence number is 12366

Protection of Personal Information – Laboratory Medicine comply with the Trust Data Protection Policy and have procedures in place to allow the Directorate and it’s employees to comply with the Data Protection Act 1998 and associated best practice and guidance.

The Trust Laboratories at Heartlands Hospital, Good Hope Hospital and Solihull Hospital were awarded UKAS (United Kingdom Accreditation Service) accreditation to the internationally recognised ISO 15189 standard in May 2015. For a list of accredited tests and other information please visit the test database
Tests not appearing on this scope are either under consideration or in the process of accreditation and so currently remain outside of our scope of accreditation. However, these tests have been validated to the same high standard as accredited tests and are performed by the same trained and competent staff.

For further information contact Louise Fallon, Quality Manager, 0121 424 1235

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