Physical examination maneuver

Physical Exam

Finger Rub Test

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Video coming September 2026

How to Perform

Stand to the side, out of the patient's view. Hold your hand about 15 cm (6 inches) from one ear and briskly rub your thumb and fingers together to produce a soft rustling sound, asking the patient to say when they hear it; gently mask or occlude the opposite ear. Compare the two sides.

How to Interpret

Showing all 2 findings

Hearing Impairment

CALFRAST-Faint 70 positive
Rule in
Somewhat helpful
Rule out
Very helpful
Evidence:Limited
CALFRAST-Strong 70 positive
Rule in
Rule out
Helpful
Evidence:Limited

References

  • Torres-Russotto D, Landau WM, Harding GW, Bohne BA, Sun K, Sinatra PM. Calibrated finger rub auditory screening test (CALFRAST). Neurology. 2009;72(18):1595-1600. PMID 19414727; DOI 10.1212/WNL.0b013e3181a41280. (Erratum: Neurology 2010;74(5):440.) Open-access full text available at CDC stacks (stacks.cdc.gov/view/cdc/213358).
  • McGee S. Evidence-Based Physical Diagnosis. 6th ed. Philadelphia, PA: Elsevier; 2025.