| Watson : |
Male TBW = |
2.447 - (0.09156 x age) + (0.1074 x height) + (0.3362 x weight) |
| Female TBW = |
-2.097 + (0.1069 x height) + (0.2466 x weight) |
| Hume-Weyers : |
Male TBW = |
(0.194786 x height) + (0.296785 x weight) - 14.012934 |
| Female TBW = |
(0.34454 x height) + (0.183809 x weight) - 35.270121 |
| Chertow's Bioelectrical Impedance: |
| |
TBW = |
ht x (0.0186104 x wt + 0.12703384) + wt x (0.11262857 x male +
0.00104135 x age - 0.00067247 x wt - 0.04012056) - age x (0.03486146 x
male + 0.07493713) - male x 1.01767992 + diabetes x 0.57894981 |
| Mellits-Cheek (kids) : |
Boys TBW |
= -1.927 + 0.465 x weight + 0.045 x height, for height < 132.7 cm |
| = -21.993 + 0.406 x weight + 0.209 x height, for height > 132.7 cm
|
| Girls TBW |
= 0.076 + 0.507 x weight + 0.013 x height, for height < 110.8 cm |
| = -10.313 + 0.252 x weight + 0.154 x height, for height > 110.8 cm |
|
Urea Reduction Ratio : URR = (1 -
|
| post-BUN |
) x 100 |
 |
| pre-BUN |
|
|
Daugirdas : Kt/V = -ln(
|
| post-BUN |
- 0.03) + (4 - 3.5 x |
post-BUN |
) x |
UF |
|
|
|
| pre-BUN |
pre-BUN |
weight |
|