The FNAC test is a quick, low-cost, and easy way to evaluate a particular body part or condition. A fine gauge needle is used to aspirate cells from a specific area of the body. The sample is then transported to the lab, where it undergoes a number of procedures before being inspected under a microscope. This test is very useful for identifying several types of cancers and inflammatory illnesses. The breast, kidney, liver, lungs, prostate, pancreas, salivary glands, retroperitoneum, and lymph nodes are among the organs that are frequently examined using this method.