Bonjour Liz. This expanded sentence shows the complete meaning; you might reduce it to "count," although I would use the word "differential" for "formule" because it's clearer that way that we're talking about white blood cells.

From the online medical dictionary: "differential count, Diff, white blood cell differential count - Hematology: The relative number of leukocytes–eg segmented and band forms of granulocytes, eosinophils, lymphocytes and monocytes in the peripheral circulation, expressed in percentages of the total WBC count."

"For this reason, manual WBC differential count by microscopy remains the current gold standard"

"The differential white blood cell count can be performed on an automated instrument or by microscopy."

Journal article reference: "Estimated platelet and differential leucocyte count by microscopy, sysmex XE – 2100 and cella vision DM 96. N Z J Med Lab Sci 2009; 63 (1): 3-10."

etc.



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Note added at 1 hr (2016-01-12 16:50:01 GMT)
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I think "confirmed" might be more precise than "performed" and I'm assuming that "contrôlée" works the same way in French as do controllato/controlado in Italian and Spanish.

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Note added at 1 day1 hr (2016-01-13 16:54:22 GMT)
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Hi again,

Given the new context, I think it's definitely the white blood cell differential count, not a complete blood count