Anatomy Rains factor is used for measurement of blood loss in operations or minor procedures . It is A Total difference in swab weight x 0.5 B Total difference in swab weight x 1.5 C Total difference in swab weight x 2.5 D None of the above 💡 Explanation Rains factor is used for measurement of blood loss in operations or minor procedures . It is ✓ Correct Answer: B. Total difference in swab weight x 1.5