Low blood volume

Low blood volume is a commonly found sign of ME/CFS and POTS.

Notable studies

 * The roles of orthostatic hypotension, orthostatic tachycardia, and subnormal erythrocyte volume in the pathogenesis of the chronic fatigue syndrome.
 * Renin-Aldosterone Paradox and Perturbed Blood Volume Regulation Underlying Postural Tachycardia Syndrome
 * Chronic fatigue syndrome: illness severity, sedentary lifestyle, blood volume and evidence of diminished cardiac function.

Learn more

 * The Blood Volume Paradox in Chronic Fatigue Syndrome (ME/CFS) and POTS - Health Rising