Abdul Mannan: Think of RET-He as Your Marrow’s Daily WhatsApp Status Update
Abdul Mannan, Consultant Haematologist at Betsi Cadwaladr University Health Board, posted on LinkedIn:
”Think of RET-He as your marrow’s daily WhatsApp status update.
It tells you right now whether iron is reaching the baby red cells.
Traditional tests like haemoglobin arrive fashionably late – weeks behind the problem.
RET-He shows up in 2–4 days, ready to act.
Low number? Your marrow is starving for iron today.
Give iron. Check again in days, not months.
Normal RET-He but microcytosis persists? Stop blaming iron – look for thalassaemia traits instead.
In kidney disease, inflammation tricks ferritin into lying. RET-He keeps it honest.
It’s the difference between guessing and knowing.
Two-day window. Real-time feedback. Smarter iron therapy.
“Don’t wait for anaemia to announce itself – catch it whilst it’s still brewing.”

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