Serum urea and creatinine concentration

Patient Parameters	Control normal patients group	Haemodialysis patients group
		Without pruritus	Mild pruritus	Moderate pruritus	Severe pruritus
Urea (mg/dl)	20.5 ±4.45^d	83.67 ±21.67^b	56 ± 39.47^c	79.22 ±10.74^b	88.00 ± 18.90^a
Creatinine (mg/dl)	0.74 ±0.15^c	5.08 ±1.69^b	3.97 ±1.30^b
				4.88 ±0.93^b	6.36 ±1.47^a

Reference ranges are presented as mean ± S.E.
Means values with different superscript letters in the same row are significantly different (P<0.05)

Table 1: Serum urea and creatinine concentration in normal control and hemodialysis patients with and without pruritus.