Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2023 Jun 20;329(23):2088-2089.
doi: 10.1001/jama.2023.7467.

Development of Duffy Null-Specific Absolute Neutrophil Count Reference Ranges

Affiliations

Development of Duffy Null-Specific Absolute Neutrophil Count Reference Ranges

Lauren E Merz et al. JAMA. .
No abstract available

Plain language summary

This study establishes a Duffy null phenotype–specific absolute neutrophil count reference range to optimize care and improve health equity.

PubMed Disclaimer

Conflict of interest statement

Conflict of Interest Disclosures: Dr Achebe reported receiving personal fees for being a member of scientific advisory boards for Pharmacosmos A/S, AMAG Pharmaceuticals, Global Blood Therapeutics, and Fulcrum Pharmaceuticals. No other disclosures were reported.

Figures

Figure.
Figure.. Duffy Null Absolute Neutrophil Count Reference Range Compared With Current Institutional Reference Range
One hundred twenty Duffy null samples are represented in the histogram. The central 95% reference range for the Duffy null cohort is 1210/μL to 5390/μL. The overlying bell curve represents the current institutional central 95% reference range of 1900/μL to 7600/μL. There is a significant different between the Duffy reference median and the current reference median (2820/μL vs 4750/μL; P < .001).

References

    1. Howes RE, Patil AP, Piel FB, et al. . The global distribution of the Duffy blood group. Nat Commun. 2011;2:266. doi:10.1038/ncomms1265 - DOI - PMC - PubMed
    1. Merz LE, Story CM, Osei MA, et al. . Absolute neutrophil count by Duffy status among healthy Black and African American adults. Blood Adv . 2023;7(3):317-320. doi:10.1182/bloodadvances.2022007679 - DOI - PMC - PubMed
    1. Centers for Disease Control and Prevention . Strengthening clinical laboratories. Published 2018. Accessed November 14, 2022. https://www.cdc.gov/csels/dls/strengthening-clinical-labs.html#print
    1. Oyogoa E, Martens KL, McMurry HS, et al. . Clinical outcomes of patients referred for asymptomatic neutropenia at a single academic center: a focus on racial disparities. Blood. 2022;140(suppl 1):5119-5120. doi:10.1182/blood-2022-170414 - DOI - PMC - PubMed
    1. Dickson AL, Daniel LL, Jackson E, et al. . Race, genotype, and azathioprine discontinuation: a cohort study. Ann Intern Med. 2022;175(8):1092-1099. doi:10.7326/M21-4675 - DOI - PMC - PubMed

Publication types

Substances