Tissue testing, also known as biopsy, is done through several methods, primarily involving the removal and examination of tissue samples. The specific method depends on the location and type of tissue being tested.
Here's a breakdown of the common methods:
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Needle Biopsy: This involves inserting a needle into the tissue to extract a sample. There are two main types:
- Fine Needle Aspiration (FNA): A very thin, hollow needle is used to collect samples of individual cells.
- Core Needle Biopsy: A larger needle is used to collect small pieces of tissue (a "core").
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Open Biopsy (Surgical Biopsy): This is a surgical procedure where the tissue is exposed and a larger sample is removed. This might involve making an incision.
The tissue sample is then sent to a laboratory, where it is processed and examined under a microscope by a pathologist to diagnose diseases or conditions.
