Table 4.

Target level of serum phosphorus, calcium and iPTH in CKD stage 5

Biochemical parameters	K/DOQI	KDIGO
Serum phosphorus	3.5–5.5 mg/dL (1.13–1.78 mmol/L)	Toward Normal [2.5–4.5 mg/dL (0.81–1.45 mmol/L)]
Corrected total calcium	8.4–9.5 mg/dL (2.10–2.38 mmol/L)	Maintain Normal [Healthy: 8.5–10.5 mg/dL (2.13–2.63 mmol/L)]
Serum iPTH	150–300 pg/mL (16.5–33.0 pmmol/L)	2–9 times the upper normal limit (65 pg/mL, 6.9 pmmol/L)

K/DOQI Kidney Disease Outcomes Quality Initiative, KDGIO Kidney Disease: Improving Global Outcomes, iPTH Intact parathyroid hormone