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Related Concept Videos

Olfaction01:25

Olfaction

The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
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A new framework for the labeling of odors in the Sniffin' Sticks odor identification test: relevance of familiarity and test-retest assessment.

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Updated: Jul 7, 2026

Vertical T-maze Choice Assay for Arthropod Response to Odorants
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The digital scent device 20: an automated, self-administered odor identification test.

Agnieszka Sabiniewicz1, Sophia Wittig2, Antje Haehner2

  • 1Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany. a.sabiniewicz@gmail.com.

European Archives of Oto-Rhino-Laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery
|August 29, 2024
PubMed
Summary

The Digital Scent Device 20 (DSD-20) shows high reliability for assessing olfactory function. This innovative test is a fast, portable, and reusable tool for clinical use.

Keywords:
Digital Scent Device 20Odor identification testOlfactionSniffin’ sticks

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Area of Science:

  • Neuroscience
  • Otorhinolaryngology

Background:

  • Assessing olfactory function is crucial in clinical settings, especially post-COVID-19.
  • There's a growing need for faster and more cost-effective olfactory testing methods.

Purpose of the Study:

  • To evaluate the reliability and characteristics of the Digital Scent Device 20 (DSD-20) in a European population.
  • To validate DSD-20 as an efficient tool for olfactory assessment.

Main Methods:

  • 88 participants (37 normosmic controls, 51 dysosmic patients) were included.
  • The DSD-20 test was administered and compared with the Sniffin' Sticks olfactory test.
  • Test-retest reliability was assessed using correlation coefficients and Bland-Altman plots.

Main Results:

  • High correlation found between DSD-20 and Sniffin' Sticks (TDI score: R=.80, p<.001).
  • Excellent test-retest reliability for DSD-20 was demonstrated (R=.88, p<.001).
  • DSD-20 is characterized by simplicity, speed, portability, and reusability.

Conclusions:

  • The DSD-20 is a reliable and useful tool for olfactory function assessment.
  • The study confirms DSD-20's effectiveness in distinguishing between normosmic individuals and those with hyposmia/anosmia.