see also:

• full blood examination (FBE)
• neutropenia
• eosinophilia
• eosinopenia

• acute infection or haemorrhage
• anaphylaxis, urticaria, drug hypersensitivity
• corticosteroids
• cytotoxic agents
• thyroid hormones
• ionizing radiation
• hyperthyroidism
• neoplasia / cancer / tumours
• ovulation
• congenital absence