What could potentially occur if the blood sample is drawn too slowly?

What could potentially occur if the blood sample is drawn too slowly?

• A. The sample might clot
• B. The sample might hemolyze
• C. The sample might be too dilute
• D. The sample might be too concentrated

Answer: (A)

Drawing a blood sample too slowly can indeed lead to clotting. When the blood is collected slowly, it can result in the blood having more time in contact with the air and with the walls of the collection tube, leading to the activation of the coagulation process. Clotting is particularly a concern when the blood is not collected into an appropriate additive tube designed to prevent coagulation, such as those containing anticoagulants. In contrast, hemolysis, dilution, and concentration issues usually relate to different circumstances. Hemolysis typically occurs due to factors such as rough handling of the sample, drawing from a site that has excess pressure, or using a needle that is too small. Dilution of the sample can occur if the specimen is contaminated or if an excess amount of anticoagulant is used, while a concentrated sample may result from insufficient blood being drawn or improper mixing with additives. Understanding these processes helps in recognizing the importance of proper technique and timing during blood collection.

Drawing a blood sample too slowly can indeed lead to clotting. When the blood is collected slowly, it can result in the blood having more time in contact with the air and with the walls of the collection tube, leading to the activation of the coagulation process. Clotting is particularly a concern when the blood is not collected into an appropriate additive tube designed to prevent coagulation, such as those containing anticoagulants.

In contrast, hemolysis, dilution, and concentration issues usually relate to different circumstances. Hemolysis typically occurs due to factors such as rough handling of the sample, drawing from a site that has excess pressure, or using a needle that is too small. Dilution of the sample can occur if the specimen is contaminated or if an excess amount of anticoagulant is used, while a concentrated sample may result from insufficient blood being drawn or improper mixing with additives. Understanding these processes helps in recognizing the importance of proper technique and timing during blood collection.