Final answer:
Sizing of tissue samples in the laboratory is typically not performed by physical standard comparisons. Instead, precise equipment like micrometers or automated systems are used to ensure consistent sample dimensions. The criterion suggested by the author as an alternative method is not common practice.
Step-by-step explanation:
When processing tissue in a laboratory setting, sizing refers to the procedure of ensuring that the tissue samples are of appropriate dimensions. This is essential for the consistent handling of samples during preparation, analysis, and diagnosis. However, the statement 'Sizing of processed tissue may NOT be performed by comparisons to standards' implies that comparing tissue samples directly to a physical standard is not a typical practice in the field. In contrast, sizing is generally achieved through the use of specialized equipment designed to cut or measure tissue sections accurately, rather than through direct comparison to a pre-determined standard. This is mainly because tissue processing requires precision that cannot easily be achieved by simple visual comparisons with a standard size.
The criteria mentioned in the provided information seem to be defined by the author to suggest an alternative method that is not commonly practiced in the field. While the idea of using standard comparisons for tissue sizing might propose potential benefits in terms of quality control, it is not part of the established procedures in most histology labs.
Typical tissue sizing techniques involve the use of micrometers, calipers, or other measuring devices that allow for precise dimensional control. Alternatively, automated systems might be employed for reproducibility and efficiency. The importance of these methodologies lies in their ability to ensure that sizes are accurately maintained for further analytical procedures, which comparisons to physical standards are likely unable to provide.