Why do they string blood in to the sample bottle but not through the needle? Why you don't shake the blood sample?

Blood is typically drawn into a sample bottle by inserting a needle into a vein and allowing the blood to flow directly into the bottle. This method ensures that the blood is collected in a sterile manner and minimizes the risk of contamination. Shaking the blood sample can cause hemolysis, which is the breakdown of red blood cells, and can affect the accuracy of test results. It is important to handle blood samples carefully to ensure accurate and reliable test results.

Why do they string blood into the sample bottle but not through the needle?

When blood is drawn for testing, it is typically collected into a vacuum-sealed sample bottle. The blood is drawn into the bottle through a needle, but the needle is not left in the bottle. This is because:

- Clot formation: If the needle is left in the bottle, it can cause the blood to clot. This can make it difficult to get an accurate sample.
- Bacterial contamination: The needle can also introduce bacteria into the blood sample. This can contaminate the sample and make it unusable.

Why you don't shake the blood sample?

Blood samples should not be shaken because this can cause:

- Hemolysis: Shaking the blood sample can break down the red blood cells. This can release hemoglobin into the plasma, which can interfere with testing.
- Coagulation: Shaking the blood sample can also cause the blood to clot. This can make it difficult to get an accurate sample.