Question 39

Hemolysis is caused by excessive shaking of a tube.

Excessive shaking of a tube can lead to hemolysis, which is the breakdown of red blood cells. This process can release hemoglobin into the serum, leading to inaccurate test results.

A) Hemophilia

Hemophilia is a genetic disorder that affects the blood's ability to clot properly. It is not caused by shaking a tube but rather results from deficiencies in specific clotting factors, making this option incorrect.

B) Hemoconcentration

Hemoconcentration refers to an increase in the concentration of blood constituents due to a decrease in plasma volume. While it can occur due to various physiological conditions or dehydration, it is not directly caused by excessive shaking of a tube, thus making this option incorrect.

C) Hemolysis

Hemolysis is indeed caused by excessive shaking of a tube, as this action can damage red blood cells, leading to their rupture and the release of hemoglobin into the bloodstream. This makes this option the correct answer.

D) Hemostasis

Hemostasis is the process that prevents and stops bleeding, involving the clotting of blood. It is a natural biological response and is not influenced by the shaking of a tube, making this option incorrect.

Conclusion

Hemolysis is the only condition directly linked to the excessive shaking of a tube, as it results in the mechanical destruction of red blood cells. Other options, such as hemophilia, hemoconcentration, and hemostasis, refer to different blood-related conditions that do not arise from this specific action. Therefore, hemolysis is the definitive answer to the question posed.