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Research ArticleResearch

Feasibility of Using Fluorescence Spectrophotometry to Develop a Sensitive Dye Immersion Method for Container Closure Integrity Testing of Prefilled Syringes

Xujin Lu, David K. Lloyd and Steven E. Klohr
PDA Journal of Pharmaceutical Science and Technology January 2016, 70 (1) 39-50; DOI: https://doi.org/10.5731/pdajpst.2015.006015
Xujin Lu
Analytical and Bioanalytical Development, Research & Development, Bristol-Myers Squibb Company, New Brunswick, NJ
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  • For correspondence: xujin.lu@bms.com
David K. Lloyd
Analytical and Bioanalytical Development, Research & Development, Bristol-Myers Squibb Company, New Brunswick, NJ
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Steven E. Klohr
Analytical and Bioanalytical Development, Research & Development, Bristol-Myers Squibb Company, New Brunswick, NJ
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Abstract

A feasibility study was conducted for a sensitive and robust dye immersion method for the measurement of container closure integrity of unopened prefilled syringes using fluorescence spectrophotometry as the detection method. A Varian Cary Eclipse spectrofluorometer was used with a custom-made sample holder to position the intact syringe in the sample compartment for fluorescence measurements. Methylene blue solution was initially evaluated as the fluorophore in a syringe with excitation at 607 nm and emission at 682 nm, which generated a limit of detection of 0.05 μg/mL. Further studies were conducted using rhodamine 123, a dye with stronger fluorescence. Using 480 nm excitation and 525 nm emission, the dye in the syringe could be easily detected at levels as low as 0.001 μg/mL. The relative standard deviation for 10 measurements of a sample of 0.005 μg/mL (with repositioning of the syringe after each measurement) was less than 1.1%. A number of operational parameters were optimized, including the photomultiplier tube voltage, excitation, and emission slit widths. The specificity of the testing was challenged by using marketed drug products and a protein sample, which showed no interference to the rhodamine detection. Results obtained from this study demonstrated that using rhodamine 123 for container closure integrity testing with in-situ (in-syringe) fluorescence measurements significantly enhanced the sensitivity and robustness of the testing and effectively overcame limitations of the traditional methylene blue method with visual or UV-visible absorption detection.

LAY ABSTRACT: Ensuring container closure integrity of injectable pharmaceutical products is necessary to maintain quality throughout the shelf life of a sterile drug product. Container closure integrity testing has routinely been used to evaluate closure integrity during product development and production line qualification of prefilled syringes, vials, and devices. However, container closure integrity testing has recently gained industry attention due to increased regulatory agency scrutiny regarding the analytical rigor of container closure integrity testing methods and expectations to use container closure integrity testing in lieu of sterility tests in stability programs. Methylene blue dye is often used for dye ingress testing of container closure integrity, but we found it unsuitable for reliable detection of small breaches in prefilled syringes of drug product. This work describes the suitability and advantages of using a fluorescent dye and spectroscopic detection for a robust, sensitive, and quality control–friendly container closure integrity testing method for prefilled syringes.

  • Prefilled syringes
  • Container closure integrity
  • Dye ingress
  • Fluorescence detection
  • UV detection
  • © PDA, Inc. 2016
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PDA Journal of Pharmaceutical Science and Technology: 70 (1)
PDA Journal of Pharmaceutical Science and Technology
Vol. 70, Issue 1
January/February 2016
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Feasibility of Using Fluorescence Spectrophotometry to Develop a Sensitive Dye Immersion Method for Container Closure Integrity Testing of Prefilled Syringes
Xujin Lu, David K. Lloyd, Steven E. Klohr
PDA Journal of Pharmaceutical Science and Technology Jan 2016, 70 (1) 39-50; DOI: 10.5731/pdajpst.2015.006015

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Feasibility of Using Fluorescence Spectrophotometry to Develop a Sensitive Dye Immersion Method for Container Closure Integrity Testing of Prefilled Syringes
Xujin Lu, David K. Lloyd, Steven E. Klohr
PDA Journal of Pharmaceutical Science and Technology Jan 2016, 70 (1) 39-50; DOI: 10.5731/pdajpst.2015.006015
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Keywords

  • Prefilled syringes
  • Container closure integrity
  • Dye ingress
  • Fluorescence detection
  • UV detection

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