Oneworld Accuracy Nigeria

(A2LA Cert. No. 4839.04) Revised 3/6/2026 Page 3 of 5 PROGRAM NAME SUB-DISCIPLINE ANALYTES MEASURED1 Transfusion medicine EQA Qualitative: Transfusion Medicine (includes blood grouping, direct antiglobulin testing, compatibility testing, unexpected antibody detection and identification, antigen typing) Reference values as determined by analysis PLUS matching Consensus values from participants Clinical Microscopy EQA Qualitative: Clinical Microscopy Reference values as determined by analysis PLUS matching Consensus values from participants Diagnostic Immunology EQA Quantitative: Antiphospholipid Autoimmunity Rheumatologic Arthritis Autoimmunity Anti-neutrophil Cytoplasm Autoimmunity Coeliac Disease Organ Autoimmunity Rheumatologic Autoimmunity Thyroid Autoimmunity Inhalant Allergy Anti-streptolysin O C-Reactive Protein (plus high sensitivity variant) Food Allergy Rheumatoid Factor Qualitative: Antiphospholipid Autoimmunity Rheumatologic Arthritis Autoimmunity Anti-neutrophil Cytoplasm Autoimmunity Coeliac Disease Organ Autoimmunity Rheumatologic Autoimmunity Anti-Nuclear Antibody Anti-streptolysin O C-Reactive Protein Rheumatoid Factor Quantitative Analysis = Consensus values from participants Qualitative Analysis = Reference values as determined by analysis PLUS matching Consensus values from participants

(A2LA Cert. No. 4839.04) Revised 3/6/2026 Page 4 of 5 PROGRAM NAME SUB-DISCIPLINE ANALYTES MEASURED1 Clinical Serology EQA Quantitative: EBV Serology SARS-Cov-2-Antigen Qualitative: Viral Antigen Detection EBV Serology HIV Helicobacter pylori Antibody Herpes Simplex Lyme Disease Infectious Mononucleosis Mycoplasma Antibody SARs-CoV-2 Antibodies Dengue Virus West Nile Virus Hepatitis serology Multimarker blood screening serology Retrovirus and syphilis TORCH and EBV Quantitative Analysis = Consensus values from participants Qualitative Analysis = Reference values as determined by analysis PLUS matching Consensus values from participants Andrology EQA Quantitative: Sperm Analysis (count, morphology, viability) Sperm Mobility (Total Motility; Progressive Motility; Non- Progressive Motility; Immotility) Qualitative: Sperm Screen Quantitative Analysis = Consensus values from participants Qualitative Analysis = Reference values as determined by analysis PLUS matching Consensus values from participants Bacteriology EQA Qualitative: Urine Colony Count Qualitative: Bacterial Identification and Culture Clostridium difficile Antigen Methicillin Resistant Staphylococcus aureus Neisseria Gonorrhoeae Culture Streptococcus A Antigen and Culture Vancomycin Resistant Enterococcus Virtual Gram Stain Virtual Bacterial Vaginosis Qualitative = Reference values as determined by analysis PLUS matching Consensus values from participants

(A2LA Cert. No. 4839.04) Revised 3/6/2026 Page 5 of 5 PROGRAM NAME SUB-DISCIPLINE ANALYTES MEASURED1 Bacteriology EQA (cont) Carbapenem Resistant Enterobacteriaceae (Carbapenem Resistance Detection) Group B Streptococcus Qualitative = Reference values as determined by analysis PLUS matching Consensus values from participants Mycobacteriology EQA Qualitative: Mycobacterium Acid Fast Stain Mycobacterium Species Culture Reference values as determined by analysis PLUS matching Consensus values from participants Mycology EQA Qualitative: Cryptococcus Antigen Dermatophyte KOH slides Mold / Yeast Culture Reference values as determined by analysis PLUS matching Consensus values from participants Parasitology EQA Qualitative: Blood Parasites Malaria PVA Smear Wet Mount Virtual Blood Parasites Virtual Malaria Virtual Stool Parasite Qualitative = Reference values as determined by analysis PLUS matching Consensus values from participants SARS-CoV-2 Molecular Qualitative: Molecular Diagnostics SARS-CoV-2 1Analytes/parameters in each program are targeted per defined specifications. Assigned values and associated uncertainties are known values with results determined by finished product testing of proficiency program.

For the proficiency testing schemes to which this accreditation applies, please refer to the provider’s Scope of Accreditation. Accredited Proficiency Testing Provider A2LA has accredited ONEWORLD ACCURACY NIGERIA LIMITED Lagos, Nigeria This accreditation covers the specific proficiency testing schemes listed on the agreed updo Scope of Accreditation. This provider is accredited in accordance with the recognized International Standard ISO/IEC 17043:2023 Conformity Assessment – General Requirements for the competence of Proficiency Testing Providers. This accreditation demonstrates technical competence for a defined scope and the operation of a quality management system. Presented this 4th day of August 2022. _______________________ Mr. Trace McInturff, Vice President, Accreditation Services For the Accreditation Council Certificate Number 4839.04 Valid to June 30, 2026