Why is proper filling of collection tubes critical in laboratory procedures?

Properly filling collection tubes is critical for multiple reasons that relate to the quality and reliability of laboratory test results. Firstly, preventing contamination is essential because any foreign substances can introduce variables that compromise the accuracy of the test. If a tube is not filled correctly, the sample could be exposed to contaminants from the external environment or from improper handling.

Moreover, maintaining test integrity is fundamental for obtaining valid results. Many laboratory tests have specific requirements for the volume of blood or other samples, and deviations from these requirements can lead to inaccurate readings. For instance, if a tube is not filled to the designated line, it may alter the concentration of the analytes being measured or affect the reactions needed for certain assays.

In summary, both preventing contamination and maintaining test integrity are crucial aspects of proper filling of collection tubes, making this practice essential in laboratory procedures.