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Table 5 Testicular Volumes (ml) of Study Subjects Obtained Clinically by Described Formulas

From: Testicular volumes revisited: A proposal for a simple clinical method that can closely match the volumes obtained by ultrasound and its clinical application

  Formulas equivalent to the following US Equations
Gonadal Stage W2x L x 0.52 W x H x L x 0.52 W x H x L x 0.71
(number in group) (W-ss)3x 0.8 (mean ± SD) (W-ss)3x 0.64 (mean ± SD) (W-ss)3x 0.88 (mean ± SD)
G-1 3 to 7 yr (24) 0.57 ± 0.09 0.46 ± 0.07 0.63 ± 0.10
7 to 9 yr (22) 0.70 ± 0.11 0.56 ± 0.09 0.77 ± 0.12
9 to 11 yr (36) 0.81 ± 0.24 0.65 ± 0.19 0.90 ± 0.26
G-2 (50) 3.20 ± 1.56 2.56 ± 1.24 3.52 ± 1.71
G-3 (18) 5.36 ± 1.20 4.28 ± 0.96 5.89 ± 1.32
G-4 (58) 10.01 ± 3.22 8.01 ± 2.58 11.01 ± 3.55
G-5 (36) 15.57 ± 2.49 12.45 ± 1.99 17.12 ± 2.74
Adults (102) 16.41 ± 3.96 13.12 ± 3.17 18.05 ± 4.36