Haematology Critical Telephone Values

 The following criteria will be used to telephone abnormal haematology results;

 Haemoglobin  White Blood Cell Count

 <80 g/L normochromic and normocytic

<70 g/L microcytic and hypochromic

<70 g/L macrocytic

<50 g/L renal patients

Low result – neutropenia <0.5 x 109/L                                                                                    

High result –

White cell count >40 x 109/L or

Lymph count > 20 x 109/L

Any presence of blast cells  

 Platelets  Sickle Test

 Lower limit - <70 x 109/L

Upper limit - >1000 x 109/L

 Positive (urgent requests only)


All Positive Malaria Screens


 Clotting Studies

  G6PD Assay

INR - >5.0                             

PTT - >180 seconds                                                

Fibrinogen - <1.0g/L

D-Dimer results > 243 ug/mL   (GP/ Outpatients)                                                     

All Anti FXa results >1.20 iu/mL 

  ≤6.4 IU/gHb





 All CD34 Quantitation’s  All FMH Quantitation’s




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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 http://www.heftpathology.com/frontpage/test-database.html.
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