Assessment of polycythaemia (definition of true polycythaemia versus haemoconcentration);

• ¹²⁵I-labelled human serum albumin

  Clinical Evaluation	Plasma volume
  Type of Imaging	n.a.

• ⁵¹Cr-labelled (autologous) red blood cells

  Clinical Evaluation	Red blood cell volume
  Type of Imaging	n.a.