Blood Density Is Nearly Equal to Water Density: A Validation Study of the Gravimetric Method of Measuring Intraoperative Blood Loss

Table 1

Masses of the eighteen rat blood samples.

50 L samples of blood
Number	Hematocrit	Mass (g)
1	45.0	0.0496
2	31.0	0.0479
3	44.5	0.0512
4	37.0	0.0506
5	48.0	0.0502
6	38.5	0.0499
7	46.5	0.0509
8	39.0	0.0497
9	47.0	0.0492
10	45.0	0.0478
11	42.5	0.0493
12	32.0	0.0474
13	46.0	0.0475
14	39.0	0.0445
15	45.0	0.0495
16	31.0	0.0480
17	24.0	0.0475
18	44.0	0.0495
Average	40.3	0.0489
Max	48.0	0.0512
Min	24.0	0.0445
Range	24.0	0.0067
SD	6.9	0.0016