Scratch test

From WikiMD's Food, Medicine & Wellness Encyclopedia

Scratch test is a medical procedure used to assess the presence of abdominal diseases, particularly those affecting the liver and gallbladder. The test is performed by a healthcare professional and involves the use of a stethoscope and a simple scratching motion.

Procedure[edit | edit source]

The scratch test is performed with the patient lying down. The healthcare professional places a stethoscope on the upper right quadrant of the patient's abdomen, near the liver. The professional then makes a gentle scratching motion on the patient's skin, starting from the lower right quadrant and moving upwards towards the stethoscope. The sound produced by the scratching is transmitted through the abdominal structures and is amplified if there is an underlying mass, such as a liver tumor or gallbladder disease.

Interpretation[edit | edit source]

The interpretation of the scratch test is based on the sound heard through the stethoscope. If the sound becomes louder or clearer as the scratching moves upwards, it suggests the presence of an underlying mass. However, the scratch test is not definitive and further diagnostic tests, such as an ultrasound or CT scan, may be required to confirm the diagnosis.

Limitations[edit | edit source]

While the scratch test is a simple and non-invasive procedure, it has several limitations. It is not always accurate and can produce false-positive or false-negative results. It is also dependent on the skill and experience of the healthcare professional performing the test. Therefore, it is typically used as a preliminary test and is not a substitute for more definitive diagnostic procedures.

See also[edit | edit source]

Scratch test Resources
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Contributors: Prab R. Tumpati, MD