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Lymphocytosis is a common finding.
Transient increases in the lymphocyte count (lymphocytosis) are usually due to acute infections e.g. viral infections, pertussis. If there is persistent lymphocytosis, consider these causes:
Look for:
Request a haematology assessment if lymphocytosis is associated with:
e-Referral Service Selection
This guideline has been signed off on behalf of NHS Devon.
Publication date: June 2016