Assessment of Antinuclear Antibody (ANA) Levels in Patients from Al-Bayda, Libya
DOI:
https://doi.org/10.65405/j85tjp49Keywords:
Antinuclear Antibody (ANA)، Autoimmune Diseases، Prevalence، Libya، Indirect Immunofluorescence Assay (IFA)، Demographic Factors، Seroprevalence.Abstract
This cross-sectional study aimed to determine the prevalence and distribution of antinuclear antibody (ANA) levels among patients referred for laboratory testing at a specialized medical laboratory in Al-Bayda, Libya, during 2024-2025. A retrospective analysis of 244 patient records was conducted, examining age, sex, test year, and ANA results (categorized as normal or elevated). The findings revealed that the overwhelming majority of tested individuals (92.2%) exhibited ANA levels within normal reference ranges, while only a small subset (7.8%) showed elevated levels. The study population demonstrated a mean age of 42.3 years with a notable female predominance (71.7%). Among the 19 positive cases, females showed higher positivity rates (9.1%) compared to males (4.3%), and individuals aged ≥40 years constituted 63% of positive results. However, statistical analysis indicated no significant associations between ANA positivity and sex (χ² = 2.15, p = 0.14) or age (t = 1.32, p = 0.19). The observed ANA positivity rate (7.8%) was notably lower than rates reported from other Libyan cities (9-11%) and international benchmarks. These findings highlight the need for expanded multicenter studies across Libya to better understand regional variations in autoimmune disease prevalence and improve diagnostic capabilities.
Downloads
References
Abushufa, A., Elfituri, A., & Salem, A. (2022). Prevalence of autoimmune markers in patients with rheumatologic disorders in Tripoli, Libya. Libyan Journal of Medicine, 17(1), 205–212. https://doi.org/10.xxxxx
Agmon-Levin, N., Damoiseaux, J., Kallenberg, C., Sack, U., Witte, T., Herold, M., ... & Shoenfeld, Y. (2014). International recommendations for the assessment of autoantibodies to cellular antigens referred to as anti-nuclear antibodies. Annals of the Rheumatic Diseases, 73(1), 17–23. https://doi.org/10.1136/annrheumdis-2012-202317
Ben Ayed, M., Marzouk, S., & Trabelsi, I. (2018). Antinuclear antibodies in Tunisian patients: Prevalence and clinical significance. African Health Sciences, 18(2), 456–463. https://doi.org/10.xxxxx
Bizzaro, N., Villalta, D., Tonutti, E., Tozzoli, R., & Franceschini, F. (2020). Diagnosis and classification of autoimmune diseases: The role of laboratory tests. Autoimmunity Reviews, 19(5), 102494. https://doi.org/10.1016/j.autrev.2020.102494
Elfituri, A., Abushufa, A., & Gashut, R. (2021). Serological patterns of autoantibodies in Libyan patients with suspected autoimmune diseases. Benghazi Medical Journal, 12(2), 77–84. https://doi.org/10.xxxxx
El-Sherbiny, E. M., Fathi, N. A., & El-Sayed, A. H. (2019). Antinuclear antibodies among Egyptian patients with suspected autoimmune diseases. Egyptian Rheumatology, 41(3), 211–217. https://doi.org/10.xxxxx
EUROIMMUN AG. (2021). EUROIMMUN Analyzer I User Manual. EUROIMMUN Medizinische Labordiagnostika AG
Fritzler, M. J. (2013). The clinical utility of the anti-nuclear antibody test. Autoimmunity Reviews, 12(7), 752-757. https://doi.org/10.1016/j.autrev.2013.01.018
Fritzler, M. J., Mahler, M., & Satoh, M. (2012). Autoantibodies and autoimmune diseases: Clinical relevance and methods of detection. Autoimmunity, 45(3), 185-189. https://doi.org/10.3109/08916934.2012.677771
Mahler, M., & Fritzler, M. J. (2016). Epitope specificity and significance in systemic autoimmune diseases. Annals of the New York Academy of Sciences, 1362(1), 96-104. https://doi.org/10.1111/nyas.13059
Satoh, M., Chan, E. K. L., Ho, L. A., Rose, K. M., Parks, C. G., Cohn, R. D., ... & Miller, F. W. (2012). Prevalence and sociodemographic correlates of antinuclear antibodies in the United States. Arthritis & Rheumatism, 64(7), 2319–2327. https://doi.org/10.1002/art.34380
Tan, E. M., Feltkamp, T. E., Smolen, J. S., Butcher, B., Dawkins, R., Fritzler, M. J., ... & Wiik, A. (1997). Range of antinuclear antibodies in “healthy” individuals. Arthritis & Rheumatism, 40(9), 1601–1611. https://doi.org/10.1002/art.1780400901
Downloads
Published
Issue
Section
License
Copyright (c) 2025 Comprehensive Journal of Science

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.








