The liver scratch test (also known as Lazar's test) is a technique used by medical professionals during a physical exam to locate the inferior border of the liver in order to approximate the size of a patient's …

One is to place the diaphragm over the area of the liver and then scratch parallel to the costal margin until the sound intensity drops off marking the edge of the liver.

The purpose of liver palpation is to approximate liver size, feel for tenderness and masses. Keep in mind that many of the findings of liver disease are found outside the abdomen.

The scratch test uses auscultation to detect the lower liver edge by using the difference in sound transmission through the abdominal cavity over solid and hollow organs.

After placing a stethoscope over the approximate location of a patient's liver, a medical professional will then scratch the skin of the patient's abdomen lightly, moving laterally along the liver border.

Nov 6, 2025 · Normal findings: : The normal craniocaudal liver size is 7–11.5 cm in women and 8–12.5 cm in men. In most patients, the liver is fully covered by the ribs. position with their legs slightly bent. …

When there is a suspicion of liver disease, we recommend that clinicians forgo the “scratch” test and use percussion to estimate the liver span (>15 cm = enlargement). Liver ultrasonography will be required …

Identify the upper border of liver dullness in the mid-clavicular line by lightly percussing from lung resonance down toward liver. An alternate method of estimating liver size is the scratch test. Keep …

The scratch test for liver is a diagnostic tool used to assess liver function. It involves scratching the skin and observing the time it takes for the resulting scratch to heal.

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