Table 2.

Frequency of Measurement and Target Ranges of Parathyroid Hormone (PTH) and Phosphorus According to Stage of Chronic Kidney Disease

StageGFR Range (mL/min/1.73m2)Measurement of PTHMeasurement of Calcium and PhosphorusTarget PO4 (mg/dL)Target PTH (pg/mL)
III30 to 59Every 12 monthsEvery 12 months2.7 to 4.630 to 70 (level B)
IV15 to 29Every 3 monthsEvery 3 months2.7 to 4.670 to 110 (level B)
V<15 or dialysisEvery 3 monthsEvery month3.5 to 5.5150 to 300 (level A)
  • Adapted from the National Kidney Foundation 2003, used with permission.

  • GFR, glomerular filtration rate.