Excellent teaching point! This is getting filed away in my
#LabFacts archive:
Critical teaching point regarding CD4 count interpretation in persons with HIV! 👇👇👇
- CD4 count is back-calculated from the total WBC count.
- Total WBC x %lymphocytes —> absolute lymphocyte count (ALC)
- ALC x 4 cells —> “CD4 count”
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