99mTc-DTPA clearance rates of study subjects
| DTPA clearance variables | Mean (sd) | Range |
| t 0.5 (min) | 23.9 (9.6) | 9.4–66.4 |
| t 0.5 F(min) | 5.6 (1.5) | 1.2–10.7 |
| t 0.5 S(min) | 54.1 (13.3) | 30.5–105.0 |
| f F (%) | 39 (18) | 11–83 |
t 0.5 = half time for mono-exponential approximation to the early part of the DTPA clearance curve;t 0.5 F= half time for fast component of bi-exponential DTPA clearance curve;t 0.5 S= half time for slow component of bi-exponential DTPA clearance curve;f F = fraction of tracer cleared by fast component.