1. Briefly describe the principle of erythrocyte rate (ESR) test. 2. Discuss five factors that influence the rate of red blood cell sedimentation 3. Indicate whether the ESR is increased or decreased in each of the following conditions Bellow; i. when sickle cells are present ii. increased environmental temperature iii. unlevelled ESR rack iv. Vibration v. Elevated plasma haemoglobin vi. leukocytosis

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