It is often worthwhile checking haemoglobin levels in people who are tired.  Occasionally there is an important underlying cause such as anaemia. Mrs Browning’s haemoglobin is at a healthy 138g/L (normal range for adult females is 115-160 g/L). Excluding blood dyscrasias is often important in people presenting with non-specific symptoms such as insomnia.   Mrs Browning's cell counts were all within normal range.