Frequency of Measurement and Target Ranges of Parathyroid Hormone (PTH) and Phosphorus According to Stage of Chronic Kidney Disease
| Stage | GFR Range (mL/min/1.73m2) | Measurement of PTH | Measurement of Calcium and Phosphorus | Target PO4 (mg/dL) | Target PTH (pg/mL) |
|---|---|---|---|---|---|
| III | 30 to 59 | Every 12 months | Every 12 months | 2.7 to 4.6 | 30 to 70 (level B) |
| IV | 15 to 29 | Every 3 months | Every 3 months | 2.7 to 4.6 | 70 to 110 (level B) |
| V | <15 or dialysis | Every 3 months | Every month | 3.5 to 5.5 | 150 to 300 (level A) |
Adapted from the National Kidney Foundation 2003, used with permission.
GFR, glomerular filtration rate.