Blood: Donors
The question
To ask the Secretary of State for Health and Social Care, what assessment his Department has made of the potential impact of the enhanced pre-donation testing process pilot on reducing the number of deferrals for low Hb levels.
Answered by Dr Zubir Ahmed
NHS Blood and Transplant (NHSBT) is responsible for blood donation in England. NHSBT tests donors’ haemoglobin (Hb) to ensure they are at sufficient levels to safely donate.
NHSBT has recently changed its testing to include the first line finger prick and blood drop test using copper sulphate that estimates donors’ Hb to be above the threshold for donation. If this test is failed, second line testing with venous HemoCue, a more accurate quantitative test, is carried out. If passed, a donor can donate. If failed, a donor is deferred to ensure they can replenish low iron stores to allow their Hb to improve back to safe donation thresholds.
Earlier in 2025, the peak of low Hb deferrals was greater than 12%. With the rollout of venous HemoCue across the country, this has fallen to 4.5% of donors attending per week and has remained below 5% since 15 September 2025, resulting in improved collections.
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