Healthy IndividualsNCT06101628
Effect of Gel Nail Application on Pulse Oximetry Measurements in Healthy Individuals
A study testing Gel nail application in people with Healthy Individuals and Gel Nail, run by Tarsus University at 1 site in Turkey (Türkiye).
Trial summary
The aim of this study was to determine the effect of gel nail application on pulse oximetry measurements in healthy subjects. This study was planned as a prospective, self-controlled clinical research to determine the effect of gel nail application on SpO2 and pulse values in healthy people. Read more about this study
- Who is it for?
- Any age, women onlyHealthy volunteers can take part
- Conditions the study is for
- Healthy Individuals, Gel Nail, Oxygen Saturation
- What is being tested?
- Gel nail application
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 162 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 1 Jul 2023to 25 Jul 2024
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- Women only
- Healthy volunteers accepted
- Child, Adult, Older adult
Who may be able to join
- No communication problems,
- With full left-hand fingernails,
- No structural problems such as clubbing,
- Body temperature ≥ 36- <37.5 ºc,
- SpO2 value ≥ 95%,
- Capillary refill ≤ 2 seconds,
Show all 12Show fewer
- Who volunteered to participate in the research,
- No psychiatric or physical illness that prevents communication,
- Without circulatory problems such as Reynauld syndrome and peripheral arterial disease,
- Without anaemia,
- No respiratory diseases such as chronic obstructive pulmonary disease and asthma
- Becoming a woman
Who cannot join
- Communication problems,
- Incomplete left fingernails,
- Structural problems like sticky fingers,
- Body temperature ≥ 36- < 37.5 ºc,
- SpO2 value <95%,
- Capillary refill >2 seconds,
Show all 12Show fewer
- Not volunteering to participate in the research,
- Psychiatric or physical illness that prevents communication,
- With circulatory problems such as Reynauld syndrome and peripheral arterial disease,
- Anaemia
- Respiratory diseases such as chronic obstructive pulmonary disease and asthma
- Not being of the female gender
Trial locations and contacts
1 site in 1 country.
About this study
The aim of this study was to determine the effect of gel nail application on pulse oximetry measurements in healthy subjects. This study was planned as a prospective, self-controlled clinical research to determine the effect of gel nail application on SpO2 and pulse values in healthy people. The population of the study will consist of women who had gel nail application in a private beauty centre between July 2023 and July 2024. The minimum required sample size was calculated as 162 in G*Power (3.1.9.2) programme (α=0.05 (two-way), 1-β=0.95). The data will be collected with the data collection form prepared in line with the literature.First, the age and smoking status of participants who meet the research criteria will be recorded on the data collection form. Then, the finger to which the gel nail polish will be applied and the control finger will be determined by drawing lots between the index fingers. Based on the result of this draw, gel nail polish will be applied to the left index finger of each participant, while the right index finger will be used as the control. Following the application of gel nail polish, SpO₂ and heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs). All measurements will be performed under standardized conditions: (1) participants will rest for at least 5 minutes before measurements, (2) their hands will be positioned at heart level, (3) ambient lighting and room temperature will be kept constant, and (4) participants will be instructed to remain still during measurements. These procedures will be applied consistently to all participants in order to minimize variability and enhance data reliability. The data obtained from the study will be analysed using SPSS (Statistical Package for Social Sciences) for Windows 26.0 software.
Read the detailed description
The aim of this study was to determine the effect of gel nail application on pulse oximetry measurements in healthy subjects. This study was planned as a prospective, self-controlled clinical research to determine the effect of gel nail application on SpO2 and pulse values in healthy people. The population of the study will consist of women who had gel nail application in a private beauty centre between July 2023 and July 2024. The minimum required sample size was calculated as 162 in G*Power (3.1.9.2) programme (α=0.05 (two-way), 1-β=0.95). The data will be collected with the data collection form prepared in line with the literature.On this form, the age of the individual, the color of the gel nail, smoking status, and the SpO2 and pulse values measured by pulse oximetry. First, the age and smoking status of participants who meet the research criteria will be recorded on the data collection form. Then, the finger to which the gel nail polish will be applied and the control finger will be determined by drawing lots between the index fingers. Based on the result of this draw, gel nail polish will be applied to the left index finger of each participant, while the right index finger will be used as the control. Following the application of gel nail polish, SpO₂ and heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs).
All measurements will be performed under standardized conditions: (1) participants will rest for at least 5 minutes before measurements, (2) their hands will be positioned at heart level, (3) ambient lighting and room temperature will be kept constant, and (4) participants will be instructed to remain still during measurements. These procedures will be applied consistently to all participants in order to minimize variability and enhance data reliability. The data obtained from the study will be analysed using SPSS (Statistical Package for Social Sciences) for Windows 26.0 software. Mean and standard deviation will be used in the evaluation of the data. Statistical significance will be accepted as p<0.05 (95% confidence interval).
- Conditions
- Healthy Individuals, Gel Nail, Oxygen Saturation, Nursing, Perioperative Care
- Being tested
- Gel nail application
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Gel nail applicationOther
Also called Control group: Non-applied nail
The finger to which the gel nail polish will be applied and the control finger will be determined by drawing lots between the index fingers. Based on the result of this draw, gel nail polish will be applied to the left index finger of each participant, while the right index finger will be used as the control. Following the application of gel nail polish, SpO₂ and heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs).
| Study group | Role | What they receive |
|---|---|---|
| EXPERIMENTAL AND CONTROL GROUP | Other | First, the age and smoking status of participants who meet the research criteria will be recorded on the data collection form. Then, the finger to which the gel nail polish will be applied and the control finger will be determined by drawing lots between the index fingers. Based on the result of this draw, gel nail polish will be applied to the left index finger of each participant, while the right index finger will be used as the control. Following the application of gel nail polish, SpO₂ and heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs).
All measurements will be performed under standardized conditions: (1) participants will rest for at least 5 minutes before measurements, (2) their hands will be positioned at heart level, (3) ambient lighting and room temperature will be kept constant, and (4) participants will be instructed to remain still during measurements. These procedures will be applied consiste Receives: Other: Gel nail application |
What is being measured
The primary outcome is the main question the study is designed to answer.
SpO2 value
Data collection form: Following the application of gel nail polish, SpO₂ measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs).
Measured: 3 months
Pulse value
Data collection form: Following the application of gel nail polish, heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs).
Measured: 3 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Oct 2023
- Study start1 Jul 2023
- Primary completion25 Jul 2024
- Study completion25 Jul 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (6)Papers the sponsor has linked to this study.
- Other trials for Healthy IndividualsStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Supportive care
- Allocation
- Not applicable
- Intervention model
- Single group
- Model description
- This study is a prospective, self-controlled clinical trial
- Masking
- None (open label)
- Enrolment
- 162 participants (actual)
Sponsor and investigators
- Lead sponsor
- Tarsus University
- Sponsor type
- University, hospital or other
- Collaborators
- Mersin University, Necmettin Erbakan University, Mustafa Kemal University
- Responsible party
- Principal investigator, Gamze BOZKUL, Tarsus University
- Investigators
- Gülay Altun Uğraş, Assoc. Dr., Principal investigator, Mersin UniversityAyşenur Serbest Baz, Lecturer, Principal investigator, Mustafa Kemal UniversitySerpil Yüksel, Assoc.Dr., Principal investigator, Necmettin Erbakan University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06101628
- Sponsor's protocol ID
- TU-BOZKUL-004
- Status last verified
- Aug 2026
- First submitted
- 17 Oct 2023
- Last updated
- 4 Aug 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Aggarwal AN, Agarwal R, Dhooria S, Prasad KT, Sehgal IS, Muthu V. Impact of Fingernail Polish on Pulse Oximetry Measurements: A Systematic Review. Respir Care. 2023 Sep;68(9):1271-1280. doi: 10.4187/respcare.10399. Epub 2023 Apr 25.
PubMed 37185113Cabanas AM, Fuentes-Guajardo M, Latorre K, Leon D, Martin-Escudero P. Skin Pigmentation Influence on Pulse Oximetry Accuracy: A Systematic Review and Bibliometric Analysis. Sensors (Basel). 2022 Apr 29;22(9):3402. doi: 10.3390/s22093402.
PubMed 35591092Deniz Dogan S, Karacay Yikar S, Arslan S, Nazik E. The Effect of Nail Polish and Henna on the Measures of Pulse Oximeters in Healthy Persons. J Perianesth Nurs. 2021 Oct;36(5):532-535. doi: 10.1016/j.jopan.2020.10.013. Epub 2021 Apr 26.
PubMed 33926803Desalu I, Diakparomre OI, Salami AO, Abiola AO. The effect of nail polish and acrylic nails on pulse oximetry reading using the Lifebox oximeter in Nigeria. Niger Postgrad Med J. 2013 Dec;20(4):331-5.
PubMed 24633278Hafen BB, Sharma S. Oxygen Saturation. (2022). In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK525974/
Ballesteros-Pena S, Fernandez-Aedo I, Picon A, Lorrio-Palomino S. [Influence of nail polish on pulse oximeter readings of oxygen saturation: a systematic review]. Emergencias. 2015 Oct;27(5):325-331. Spanish.
PubMed 29087059
Study at a glance
From the registry record, last updated by the sponsor on 4 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of Gel Nail Application on Pulse Oximetry Measurements in Healthy Individuals
- ClinicalTrials.gov ID
- NCT06101628
- Acronym / sponsor ID
- TU-BOZKUL-004
- Conditions
- Healthy Individuals, Gel Nail, Oxygen Saturation, Nursing, Perioperative Care
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 162 participants (actual)
- Lead sponsor
- Tarsus UniversityUniversity, hospital or other
- Collaborators
- Mersin University, Necmettin Erbakan University, Mustafa Kemal University
- Study start
- 1 Jul 2023 (actual)
- Primary completion
- 25 Jul 2024 (actual)
- Study completion
- 25 Jul 2024 (actual)
- First posted
- 26 Oct 2023 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The aim of this study was to determine the effect of gel nail application on pulse oximetry measurements in healthy subjects. This study was planned as a prospective, self-controlled clinical research to determine the effect of gel nail application on SpO2 and pulse values in healthy people. The population of the study will consist of women who had gel nail application in a private beauty centre between July 2023 and July 2024. The minimum required sample size was calculated as 162 in G*Power (3.1.9.2) programme (α=0.05 (two-way), 1-β=0.95). The data will be collected with the data collection form prepared in line with the literature.First, the age and smoking status of participants who meet the research criteria will be recorded on the data collection form. Then, the finger to which the gel nail polish will be applied and the control finger will be determined by drawing lots between the index fingers. Based on the result of this draw, gel nail polish will be applied to the left index finger of each participant, while the right index finger will be used as the control. Following the application of gel nail polish, SpO₂ and heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs). All measurements will be performed under standardized conditions: (1) participants will rest for at least 5 minutes before measurements, (2) their hands will be positioned at heart level, (3) ambient lighting and room temperature will be kept constant, and (4) participants will be instructed to remain still during measurements. These procedures will be applied consistently to all participants in order to minimize variability and enhance data reliability. The data obtained from the study will be analysed using SPSS (Statistical Package for Social Sciences) for Windows 26.0 software.
Detailed description
The aim of this study was to determine the effect of gel nail application on pulse oximetry measurements in healthy subjects. This study was planned as a prospective, self-controlled clinical research to determine the effect of gel nail application on SpO2 and pulse values in healthy people. The population of the study will consist of women who had gel nail application in a private beauty centre between July 2023 and July 2024. The minimum required sample size was calculated as 162 in G*Power (3.1.9.2) programme (α=0.05 (two-way), 1-β=0.95). The data will be collected with the data collection form prepared in line with the literature.On this form, the age of the individual, the color of the gel nail, smoking status, and the SpO2 and pulse values measured by pulse oximetry. First, the age and smoking status of participants who meet the research criteria will be recorded on the data collection form. Then, the finger to which the gel nail polish will be applied and the control finger will be determined by drawing lots between the index fingers. Based on the result of this draw, gel nail polish will be applied to the left index finger of each participant, while the right index finger will be used as the control. Following the application of gel nail polish, SpO₂ and heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs).
All measurements will be performed under standardized conditions: (1) participants will rest for at least 5 minutes before measurements, (2) their hands will be positioned at heart level, (3) ambient lighting and room temperature will be kept constant, and (4) participants will be instructed to remain still during measurements. These procedures will be applied consistently to all participants in order to minimize variability and enhance data reliability. The data obtained from the study will be analysed using SPSS (Statistical Package for Social Sciences) for Windows 26.0 software. Mean and standard deviation will be used in the evaluation of the data. Statistical significance will be accepted as p<0.05 (95% confidence interval).
Study design
- Primary purpose
- Supportive care
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
- Model description
- This study is a prospective, self-controlled clinical trial
| Arm | Type | Receives |
|---|---|---|
| EXPERIMENTAL AND CONTROL GROUP | Other | Other: Gel nail applicationFirst, the age and smoking status of participants who meet the research criteria will be recorded on the data collection form. Then, the finger to which the gel nail polish will be applied and the control finger will be determined by drawing lots between the index fingers. Based on the result of this draw, gel nail polish will be applied to the left index finger of each participant, while the right index finger will be used as the control. Following the application of gel nail polish, SpO₂ and heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs). All measurements will be performed under standardized conditions: (1) participants will rest for at least 5 minutes before measurements, (2) their hands will be positioned at heart level, (3) ambient lighting and room temperature will be kept constant, and (4) participants will be instructed to remain still during measurements. These procedures will be applied consiste |
Who may qualify
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (12 listed)
- No communication problems,
- With full left-hand fingernails,
- No structural problems such as clubbing,
- Body temperature ≥ 36- <37.5 ºc,
- SpO2 value ≥ 95%,
Key exclusion criteria (12 listed)
- Communication problems,
- Incomplete left fingernails,
- Structural problems like sticky fingers,
- Body temperature ≥ 36- < 37.5 ºc,
- SpO2 value <95%,
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Gel nail applicationAlso: Control group: Non-applied nailThe finger to which the gel nail polish will be applied and the control finger will be determined by drawing lots between the index fingers. Based on the result of this draw, gel nail polish will be applied to the left index finger of each participant, while the right index finger will be used as the control. Following the application of gel nail polish, SpO₂ and heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs). | Other | EXPERIMENTAL AND CONTROL GROUP |
Primary outcome
SpO2 value
Time frame: 3 months
Data collection form: Following the application of gel nail polish, SpO₂ measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs).
Pulse value
Time frame: 3 months
Data collection form: Following the application of gel nail polish, heart rate (HR) measurements will be obtained simultaneously from the left and right index fingers using pulse oximeters (POs).
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Aug 2026.
- Background: PubMed 37185113Aggarwal AN, Agarwal R, Dhooria S, Prasad KT, Sehgal IS, Muthu V. Impact of Fingernail Polish on Pulse Oximetry Measurements: A Systematic Review. Respir Care. 2023 Sep;68(9):1271-1280. doi: 10.4187/respcare.10399. Epub 2023 Apr 25.
- Background: PubMed 35591092Cabanas AM, Fuentes-Guajardo M, Latorre K, Leon D, Martin-Escudero P. Skin Pigmentation Influence on Pulse Oximetry Accuracy: A Systematic Review and Bibliometric Analysis. Sensors (Basel). 2022 Apr 29;22(9):3402. doi: 10.3390/s22093402.
- Background: PubMed 33926803Deniz Dogan S, Karacay Yikar S, Arslan S, Nazik E. The Effect of Nail Polish and Henna on the Measures of Pulse Oximeters in Healthy Persons. J Perianesth Nurs. 2021 Oct;36(5):532-535. doi: 10.1016/j.jopan.2020.10.013. Epub 2021 Apr 26.
- Background: PubMed 24633278Desalu I, Diakparomre OI, Salami AO, Abiola AO. The effect of nail polish and acrylic nails on pulse oximetry reading using the Lifebox oximeter in Nigeria. Niger Postgrad Med J. 2013 Dec;20(4):331-5.
- BackgroundHafen BB, Sharma S. Oxygen Saturation. (2022). In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK525974/
- Results publication: PubMed 29087059Ballesteros-Pena S, Fernandez-Aedo I, Picon A, Lorrio-Palomino S. [Influence of nail polish on pulse oximeter readings of oxygen saturation: a systematic review]. Emergencias. 2015 Oct;27(5):325-331. Spanish.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Gülay Altun Uğraş, Assoc. Dr. principal investigator
Mersin University
Ayşenur Serbest Baz, Lecturer principal investigator
Mustafa Kemal University
Serpil Yüksel, Assoc.Dr. principal investigator
Necmettin Erbakan University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Gel nail application in people with Healthy Individuals and Gel Nail, run by Tarsus University at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 12 inclusion and 12 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 4 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
SpO2 value (time frame: 3 months). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06101628, which also lists 6 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Aug 2026; AzTrials last refreshed its copy on 26 Oct 2026.