With their longer prongs, these devices penetrate the skin somewhat more deeply than do conventional skin-prick instruments, and they arc considered by some to more closely resemble intradermal tests
Guidelines advise that negative SPTs are followed by an intradermal test
. (12) According to the same guidelines, intradermal tests
are more sensitive and permit identification of a larger number of clinically reactive patients, especially those with lower skin test sensitivity (i.e., a higher-potency concentration of the allergen is required to elicit a skin response), and they are also useful in evaluating skin sensitivity to low-potency allergenic extracts (i.e., diluted allergen which implies that there is a state of higher skin reactivity).
Skin testing involves introducing specific antigens onto or into the skin by way of scratch, prick, and intradermal tests
Briefly, all agents were tested at increasing concentration up to a dilution of 1 in 10 of the commercially available preparation, except atracurium and opiates (maximum dilution 1 in 1,000), rocuronium, suxamethonium, cisatracurium (maximum dilution 1 in 100) and chlorhexidine (prick test performed at 0.5% and intradermal test
at 0.0002% (13,14)).
Three of the patients with an allergy to a drug or food with possible relevance to anaesthesia had positive intradermal tests
to the known allergen (ampicillin, pethidine, atropine) and no patient had a positive intradermal test
to anaesthetic drugs.
The results of 100 intradermal tests
for molds on patients presenting to an allergy practice, after two major hurricanes affected the New Jersey coast, appeared to be different from the same tests performed on an identical number of patients before the hurricanes.
for common aeroallergens (dust mites, fungi, pollens, and animal dander) were all negative.
Most widely used diagnostic method for bTB is based on intradermal tests
which are based on a measurable cellular immune response against M.
(8.) Prashad R, Kumar R, Verma SK, et al A study of Skin Sensitivity to Various Allergens by Intradermal Tests
in patients of Bronchial Asthma.
They share common antigens as evidenced by conversion of both lepromin and tuberculin intradermal tests
after administration of BCG.
The diagnostic procedure consisted of history, serologic (specific IgE), skin prick, intradermal tests
, and drug provocation tests (DPT) (1, 4-7).
Data from the survey revealed that most allergists performed both skin prick tests and intradermal tests
. Data also showed a great degree of variability in the number of tests performed, the skin prick test devices used, and interpretation of test results.