Modified olfactory testing as a screening tool for COVID-19 patient

Modified olfactory testing as a screening tool for COVID 19 patient.

Status

Recruiting

Phases

Early Phase 1

Study type

Interventional

Source

TCTR

Registry ID

TCTR20211201002

Enrollment

125

Registered

2021-12-01

Start date

2021-09-01

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

High risk of COVID infection population Odor identification test, Coronavirus, COVID 19, SARS-CoV-2

Interventions

Seven odor to test olfactory function in people that have risk of COVID-19 infection

Experimental Other

Modified Odor identification test

Eligibility

Sex/Gender

All

Age

18 Years to 80 Years

Inclusion criteria

Inclusion criteria: Age 18-80 year Meet the criteria for used of RT-PCR for diagnosed COVID-19 infection in Chulalongkorn hospital Get nasopharyngeal and oropharyngeal swab

Exclusion criteria

Exclusion criteria: History of previous hyposmia History of Alzheimer's disease, Nasal polyp, Chronic rhinosinusitis, parkinson's disease

Design outcomes

Primary

Measure	Time frame
Efficacy of modification odor to screening COVID-19 infection At the beginning of study Receiver Operating Characteristic curve	—

Secondary

Measure	Time frame
Rate of recovery of hyposmia 3 month after first smell test percent	—

Countries

Thailand

Contacts

Public ContactTossapol Lohawijarn

Chulalongkorn hospital

tossapol.l@chula.ac.th0897370216

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026