Comparative study of quality of leukoreduced packed red blood cell units as assessed by nageotte hemocytometry and flow cytometry
PURPOSE: Assessment of residual white blood cell (rWBC) count is vital to ascertain the quality of leukodepleted (LD) blood components. Automated cell analyzers lack the sensitivity for the assessment of very few leukocytes as found in LD blood components. Flow Cytometry (FC) based methods and Nageo...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2023-01-01
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| Series: | Asian Journal of Transfusion Science |
| Subjects: | |
| Online Access: | http://www.ajts.org/article.asp?issn=0973-6247;year=2023;volume=17;issue=1;spage=63;epage=68;aulast=Sheikh |
| _version_ | 1797866712624791552 |
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| author | Mohd Anas Sheikh Amit Kumar Biswas Ajay Kumar Baranwal Neerja Kushwaha Santosh Karade Joseph Philip |
| author_facet | Mohd Anas Sheikh Amit Kumar Biswas Ajay Kumar Baranwal Neerja Kushwaha Santosh Karade Joseph Philip |
| author_sort | Mohd Anas Sheikh |
| collection | DOAJ |
| description | PURPOSE: Assessment of residual white blood cell (rWBC) count is vital to ascertain the quality of leukodepleted (LD) blood components. Automated cell analyzers lack the sensitivity for the assessment of very few leukocytes as found in LD blood components. Flow Cytometry (FC) based methods and Nageotte hemocytometer are the most commonly used techniques for this purpose. The objective of this study was to compare the use of Nageotte hemocytometer and FC for quality control of LD red blood cell units.
MATERIALS AND METHODS: A prospective, observational study was conducted in the Department of Immunohematology and Blood Transfusion of a tertiary care center from September 2018 to September 2020. About 303 LD-packed red blood cell units were tested by FC and Nageotte hemocytometer for rWBCs.
RESULTS: The number of rWBC (mean) detected by flow cytometer and Nageotte's hemocytometer was 1.06 ± 0.43 white blood cell (WBC)/μL and 0.67 ± 0.39 WBC/μL, respectively. Coefficient of variation was 58.37% by Nageotte hemocytometer method and 40.46% by FC. Linear regression analysis did not show any correlation (R2 = 0.098, P = 0.001) whereas Pearson's correlation coefficient showed a weak relation (r = 0.31) between the two methods.
CONCLUSION: Flow cytometric technique provides a more precise and accurate objective tool compared to Nageotte hemocytometer which is labor intensive, time consuming, and prone to errors arising out of subjectivity along with reported underestimation bias. In the absence of adequate infrastructure, resources, and trained workforce, Nageotte hemocytometer method is a reliable alternative. Nageotte's chamber could be best used in the resource-constrained setup as it offers a relatively inexpensive, simple, and viable means to enumerate rWBCs. |
| first_indexed | 2024-04-09T23:29:46Z |
| format | Article |
| id | doaj.art-7ff251ea440141bcb71047a0b8f4e8eb |
| institution | Directory Open Access Journal |
| issn | 0973-6247 1998-3565 |
| language | English |
| last_indexed | 2024-04-09T23:29:46Z |
| publishDate | 2023-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Asian Journal of Transfusion Science |
| spelling | doaj.art-7ff251ea440141bcb71047a0b8f4e8eb2023-03-21T07:27:37ZengWolters Kluwer Medknow PublicationsAsian Journal of Transfusion Science0973-62471998-35652023-01-01171636810.4103/ajts.AJTS_101_21Comparative study of quality of leukoreduced packed red blood cell units as assessed by nageotte hemocytometry and flow cytometryMohd Anas SheikhAmit Kumar BiswasAjay Kumar BaranwalNeerja KushwahaSantosh KaradeJoseph PhilipPURPOSE: Assessment of residual white blood cell (rWBC) count is vital to ascertain the quality of leukodepleted (LD) blood components. Automated cell analyzers lack the sensitivity for the assessment of very few leukocytes as found in LD blood components. Flow Cytometry (FC) based methods and Nageotte hemocytometer are the most commonly used techniques for this purpose. The objective of this study was to compare the use of Nageotte hemocytometer and FC for quality control of LD red blood cell units. MATERIALS AND METHODS: A prospective, observational study was conducted in the Department of Immunohematology and Blood Transfusion of a tertiary care center from September 2018 to September 2020. About 303 LD-packed red blood cell units were tested by FC and Nageotte hemocytometer for rWBCs. RESULTS: The number of rWBC (mean) detected by flow cytometer and Nageotte's hemocytometer was 1.06 ± 0.43 white blood cell (WBC)/μL and 0.67 ± 0.39 WBC/μL, respectively. Coefficient of variation was 58.37% by Nageotte hemocytometer method and 40.46% by FC. Linear regression analysis did not show any correlation (R2 = 0.098, P = 0.001) whereas Pearson's correlation coefficient showed a weak relation (r = 0.31) between the two methods. CONCLUSION: Flow cytometric technique provides a more precise and accurate objective tool compared to Nageotte hemocytometer which is labor intensive, time consuming, and prone to errors arising out of subjectivity along with reported underestimation bias. In the absence of adequate infrastructure, resources, and trained workforce, Nageotte hemocytometer method is a reliable alternative. Nageotte's chamber could be best used in the resource-constrained setup as it offers a relatively inexpensive, simple, and viable means to enumerate rWBCs.http://www.ajts.org/article.asp?issn=0973-6247;year=2023;volume=17;issue=1;spage=63;epage=68;aulast=Sheikhalloimmunizationflow cytometryleukodepletionnageotte hemocytometerquality controlresidual white blood cell count |
| spellingShingle | Mohd Anas Sheikh Amit Kumar Biswas Ajay Kumar Baranwal Neerja Kushwaha Santosh Karade Joseph Philip Comparative study of quality of leukoreduced packed red blood cell units as assessed by nageotte hemocytometry and flow cytometry Asian Journal of Transfusion Science alloimmunization flow cytometry leukodepletion nageotte hemocytometer quality control residual white blood cell count |
| title | Comparative study of quality of leukoreduced packed red blood cell units as assessed by nageotte hemocytometry and flow cytometry |
| title_full | Comparative study of quality of leukoreduced packed red blood cell units as assessed by nageotte hemocytometry and flow cytometry |
| title_fullStr | Comparative study of quality of leukoreduced packed red blood cell units as assessed by nageotte hemocytometry and flow cytometry |
| title_full_unstemmed | Comparative study of quality of leukoreduced packed red blood cell units as assessed by nageotte hemocytometry and flow cytometry |
| title_short | Comparative study of quality of leukoreduced packed red blood cell units as assessed by nageotte hemocytometry and flow cytometry |
| title_sort | comparative study of quality of leukoreduced packed red blood cell units as assessed by nageotte hemocytometry and flow cytometry |
| topic | alloimmunization flow cytometry leukodepletion nageotte hemocytometer quality control residual white blood cell count |
| url | http://www.ajts.org/article.asp?issn=0973-6247;year=2023;volume=17;issue=1;spage=63;epage=68;aulast=Sheikh |
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