Zali, S, Es-haghi, A, Ranjbar Rafie, H. (1402). Validation of Free Formaldehyde Determination Method in DT Vaccine and Tetanus Toxoid Antigen. سامانه مدیریت نشریات علمی, 78(3), 881-888. doi: 10.22092/ari.2023.358602.2484
S Zali; A Es-haghi; H Ranjbar Rafie. "Validation of Free Formaldehyde Determination Method in DT Vaccine and Tetanus Toxoid Antigen". سامانه مدیریت نشریات علمی, 78, 3, 1402, 881-888. doi: 10.22092/ari.2023.358602.2484
Zali, S, Es-haghi, A, Ranjbar Rafie, H. (1402). 'Validation of Free Formaldehyde Determination Method in DT Vaccine and Tetanus Toxoid Antigen', سامانه مدیریت نشریات علمی, 78(3), pp. 881-888. doi: 10.22092/ari.2023.358602.2484
Zali, S, Es-haghi, A, Ranjbar Rafie, H. Validation of Free Formaldehyde Determination Method in DT Vaccine and Tetanus Toxoid Antigen. سامانه مدیریت نشریات علمی, 1402; 78(3): 881-888. doi: 10.22092/ari.2023.358602.2484
Validation of Free Formaldehyde Determination Method in DT Vaccine and Tetanus Toxoid Antigen
1Quality Assurance Department, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
2Quality Control Department, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
چکیده
Validation is a Good Manufacturing Practice principle that proves any procedure, process, method, equipment, material, activity, or system actually leads to the expected results. This study validates the method for the determination of free formaldehyde in biological products (including the diphtheria-tetanus vaccine and tetanus toxoid antigen). The operating procedure of this method is based on pharmacopoeial monographs. It also does not require full validation, although its suitability under the actual condition of use should be verified. Performance characterizations, such as accuracy, intra-precision (repeatability), intermediate precision (inter-precision), linearity, range, and the limit of quantitation, were investigated and calculated. Accuracy and precision were studied at different concentration levels by spiking known amounts of formaldehyde in real samples. The accuracy and precision results were expressed as the recovery and the relative standard deviation (RSD), respectively. Precision was expressed as intra-precision (repeatability) and inter-precision. Intra-precision or repeatability was performed by one operator in one day by adding three levels of concentration to the products. The inter-precision was conducted by one operator in three individual days within the same laboratory at three concentration levels. Range and linearity were assessed by investigating the correlation coefficient of the regression line between different concentrations of formaldehyde and their response. The acceptance criteria and limits were defined for these validation parameters in these biological products. The RSD for intra-day and inter-day precision studies was less than 5% in a medium concentration of linear range. At this concentration level, accuracy was 90%-110%. The method’s linearity ranged between 0.0000039%-0.01% w/v of formaldehyde with a correlation coefficient of 0.9999. The results exhibited sufficient linearity, accuracy, precision, and range. Therefore, this method can be used successfully to determine free formaldehyde for biological products.
معتبرسازی روش اندازه گیری فرمالدئید آزاد در واکسن DT و آنتی ژن توکسوئید کزاز
چکیده [English]
صحت، دقت (تکرارپذیری)، دقت بینابینی، خطی بودن، گستره وحد تشخیص کمی بررسی و محاسبه شدند. صحت و دقت در سطوح مختلف غلظتی با افزایش مقادیر شناخته شده فرمالدئید در نمونه های واقعی مورد مطالعه قرار گرفتند. نتایج صحت و دقت به ترتیب تحت عنوان بازیابی و انحراف استاندارد نسبی بیان گردیدند. دقت به صورت دقت درونی (تکرارپذیری) و دقت بینابینی بیان شد. مطالعه دقت درونی یا تکرارپذیری توسط یک اپراتور در یک روز با افزودن سه سطح غلظت در یک لات محصول انجام شد. در این مطالعه دقت بینابینی توسط یک اپراتور در سه روز جداگانه در همان آزمایشگاه، در سه سطح غلظت انجام گردید. برای بررسی گستره و خطی بودن، ضریب همبستگی خط رگرسیون بین غلظتهای مختلف فرمالدئید و پاسخ آنها بررسی شد. همچنین حدود و معیار پذیرش برای پارامترهای اعتبارسنجی در این محصولات بیولوژیکی تعریف شدند. انحراف استاندارد نسبی (RSD) برای مطالعات دقت درون روز و بین روز، در غلظت متوسط گستره خطی کمتر از 5 درصد بود. همچنین صحت در این سطح غلظت بین 90-110 درصد بود. این روش در محدوده 0.0000039-0.01 درصد وزنی-حجمی از فرمالدئید با ضریب همبستگی 0.9999 خطی بود. نتایج، خطی بودن، صحت، دقت و گستره مناسبی را نشان دادند. بنابراین این روش می تواند با موفقیت در اندازهگیری فرمالدئید آزاد برای محصولات بیولوژیکی استفاده شود.
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