Comparison of Difference Histamine Concentration (1, 5 and 10 mg/ml) for Skin Prick Test Positive Control

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

180 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-07-31

Study Completion Date

2015-08-31

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

Skin prick test (SPT) was used for diagnostic test for type 1 hypersensitivity. The efficacy and safety of SPT were proved. The positive control of SPT is histamine.

In Thailand, the most common concentration of histamine for SPT is 10 mg/ml. However, in some practice they use other concentration (1, 2.5 mg/ml).

This study will find the proper concentration of histamine for positive control use in SPT.

Related Clinical Trials

Explore similar clinical trials based on study characteristics and research focus.

Skin Irritation Test of Ten Products

NCT05245383

Dermatitic Reaction of Face

UNKNOWN NA

The Standard Concentration of Morphine as a Positive Control for Intradermal Skin Test

NCT00853476

Intradermal Test

COMPLETED

Comparison of Skin Prick Testing and Intradermal Skin Test Result of Local and Imported Insect Allergen Extracts

NCT03645291

Allergy to Arthropod Sting

COMPLETED NA

Skin Prick Test for the Diagnosis of Food Allergy- a Comparison of Different Commercial Extracts and Raw Food

NCT01508299

Food Allergy

COMPLETED NA

Trophallergen Prick Tests (PT) : Influence of Food Sample Shelf Life on the Reproducibility of PT Results

NCT06872996

Food Allergy

RECRUITING NA

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Appropriate concentration of histamine positive control is important in interpretation the result of skin prick test.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Immediate Hypersensitivity

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

SPT of histamine

SPT of histamine concentration 1, 5 and 10 mg/ml

Group Type EXPERIMENTAL

SPT

Intervention Type PROCEDURE

SPT of histamine concentration 1, 5 and 10 mg/ml

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

SPT

SPT of histamine concentration 1, 5 and 10 mg/ml

Intervention Type PROCEDURE

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* Parcitipate person who attented allergy clinic, ENT clinic
* Legible in Thai language

Exclusion Criteria

* Patient cannot withhold antihistamine drug
* Pragnancy and lactation mother
* comorbid disease such as cardiac disease, liver, renal, hypertension and severe asthma

Minimum Eligible Age

7 Years

Maximum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No