Table 4:

Organ-specific weights for humans expressed in terms of physiological measurements of body weight, height, and age ((40), unless noted otherwise)

Organ	Male	Female
Blood	(13.1*H + 18.05*W – 480)/572.3	(35.5*H + 2.27*W – 3382)/617.8
Fat	(1.20*BMI + 0.23*A – 16.2)*W/0.923/100	(1.20*BMI + 0.23*A – 5.4)*BW/0.923/100
Muscle	FFM*54/100/1.04	FFM*48.9/100/1.04
Skin*	3300/1.04/1000	2300/1.04/1000
Liver	1.0728*SA – 0.3457	1.0728*SA – 0.3457
Heart	(155.18*((H0.725)*(W0.425)*71.84/10000)1.29)/1.04/1000	(124.13*((H0.7763)*(W0.4081)*71.84/10000)1.242)/1.04/1000
Spleen	6.516*BW0.797/1.04/1000	6.516*BW0.797/1.04/1000
Kidneys	(5.04 + 2.53*A + 1.31*W + 1.36*H – 255.7)*2/1000	(5.04*2 + 2.53*A + 1.31*W + 1.36*H – 255.7)*2/1000
Brain**	1.2875	1.1585
Lungs	0.021*FFM/1.04	0.019*FFM/1.04
GI	0.021*FFM/1.04	0.027*FFM/1.04
Pancreas	0.0017*FFM/1.04	0.002*FFM/1.04
Thyroid	0.00034*FFM/1.04	0.00043*FFM/1.04
Others^	1453.03/1.04/1000	1524.88/1.04/1000

H = Height in cm; W = Weight in kg; A = Age in years; BMI = Body Mass Index in kg/m²

FFM = W – Fat mass = Fat Free Mass in kg; SA = W^0.5378 *H^0.3964*0.024265 = Surface Area in m²

^*Ref (42). Tissue density of 1.04 kg/L assumed

^**Estimated as the mean of White and African American populations (40)

^{^}Based on the sum of (gender-specific) all remaining rapidly-perfused organs (40)