promethazine methylene disalicylate alone gave a positive reaction. Patch tests and oral provocation tests were then carried out to determine which component was responsible for the fixed drug eruption. In both tests, promethazine hydrochloride gave a positive result only at the previously involved sites...
The drug may elicit a false-positive Gravindex test and false-negative Prepurex and Dap test. Promethazine may interfere with blood grouping in the ABO system. The drug significantly alters the flare response in intradermal allergen tests.
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Drug/Laboratory Test Interactions: The following laboratory tests may be affected in patients who are receiving therapy with promethazine hydrochloride. Pregnancy Tests: Diagnostic pregnancy tests based on immunological reactions between HCG and anti-HCG may result in false-negative or false-positive interp...
The standard free energy of solubilization (ΔG°s) values was found to be positive for all the additives. For the cationic and non-ionic surfactants, TΔS°s values become positive since drug incorporation increased the number of water molecules near the head group, thereby increasing the ...
D: Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk. X: Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist. NA: Information not available.Pharmacology...
HCG may result in false-negative or false-positive interpretations. Glucose Tolerance Test An increase in blood glucose has been reported in patients receiving promethazine hydrochloride. Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term animal studies have not been performed to assess the car...
Methods Twenty-four healthy volunteers received fexofenadine 80 mg, 120 mg and 180 mg, loratadine 10 mg, promethazine 30 mg (as a positive internal control) and placebo in a six-way crossover, double-blind study. Following each dose, subjects were required to perform a series of tests of...
2. Interference with diagnosis: Increased glucose tolerance can be shown in the glucose tolerance test. Can interfere with urine pregnancy immune test, resulting in false positive or false negative results. 3. The following conditions should be used with caution: acute asthma, bladder neck obstructio...
Pregnancy Tests: Diagnostic pregnancy tests based on immunological reactions between HCG and anti-HCG may result in false-negative or false-positive interpretations. Glucose Tolerance Test: An increase in blood glucose has been reported in patients receiving promethazine. 6. Adverse Reactions/Side Eff...