What indicates that a specimen has insufficient volume for testing?

The indication that a specimen has insufficient volume for testing is shown by an underfilled collection tube. In laboratory testing, specific volumes are required for accurate and reliable results. Each type of test usually has a minimum volume of blood or other specimens needed for analysis due to the need for adequate reagents and processes in the testing phase.

When the collection tube is underfilled, it often means that there is not enough specimen volume to perform the necessary tests, which could affect the accuracy of the results or prevent the test from being conducted altogether. In contrast, a completely filled tube ensures that there is enough material for testing. If the test can still be performed despite a volume issue, it implies that the sample volume is potentially sufficient for the required analysis, making it a less valid indicator of insufficient volume. Additionally, contamination refers to the introduction of unwanted substances or organisms into the specimen and does not necessarily correlate with volume issues.