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Current practices for viability testing of cryopreserved cord blood products: an international survey by the cellular therapy team of the Biomedical Excellence for Safer Transfusion (BEST) Collaborative.
- Source :
-
Transfusion [Transfusion] 2018 Sep; Vol. 58 (9), pp. 2184-2191. - Publication Year :
- 2018
-
Abstract
- Background: Viability testing is a common practice in laboratories. The goal of this study was to ascertain current laboratory practices internationally for performing viability testing for cryopreserved cord blood (CB) products and glean information about how to standardize the method to improve interlaboratory reproducibility.<br />Study Design and Methods: A survey to evaluate current laboratory practices for viability testing was designed and distributed internationally. The question topics included sampling and testing methods, responses to unexpected results, and the rating of the reliability of the CB quality tests, together with expectations for standardization.<br />Results: There were 32 respondents to the survey, of whom 28 responded to the more detailed questionnaire about viability methods. Overall, responses indicated that various stains were used among the laboratories, and when multiple sites used the same viability stain the methods differed. The majority of the respondents were in favor of standardizing the viability testing methods. A wide variety of preferences were communicated about how to standardize the method, but a majority did advocate the use of 7-aminoactinomycin D (7-AAD) with flow cytometry.<br />Conclusions: The survey results revealed a variety of tests and inconsistent interlaboratory practices for performing the viability assay. Flow cytometry with a 7-AAD dye was suggested as a first step toward standardization.<br /> (© 2018 AABB.)
- Subjects :
- Cell Nucleus ultrastructure
Cell Separation methods
Cell Survival
Dactinomycin analogs & derivatives
Flow Cytometry methods
Fluorescent Dyes
Health Care Surveys
Hematopoietic Stem Cells ultrastructure
Humans
Infant, Newborn
International Cooperation
Internet
Laboratories standards
Procedures and Techniques Utilization
Reproducibility of Results
Blood Preservation methods
Blood Safety
Cord Blood Stem Cell Transplantation methods
Cord Blood Stem Cell Transplantation standards
Cryopreservation methods
Fetal Blood cytology
Hematopoietic Stem Cells cytology
Subjects
Details
- Language :
- English
- ISSN :
- 1537-2995
- Volume :
- 58
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Transfusion
- Publication Type :
- Academic Journal
- Accession number :
- 30204955
- Full Text :
- https://doi.org/10.1111/trf.14777