The Togo national proficiency test pilot programme for basic clinical chemistry tests

Background: A national proficiency test (PT) programme is not currently implemented in most low-income countries. However, participation in such PT programmes assists improves test performance and result accuracy.Objective: This study assessed how well 11 government hospital laboratories performed 18 basic clinical chemistry tests and identified areas needing improvement.Methods: A cross-sectional study was carried out by the Division of Laboratories of the Ministry of Health of Togo from 01 July 2016 to 31 December 2016. The test performance was evaluated using panels provided by One World Accuracy, Canada (Vancouver). The Clinical Laboratory Improvement Amendments criteria were used in evaluating the laboratories, and their success rates were compared with the World Health Organization Regional Office for Africa's target of 80%.Results: The overall rate of acceptable results at the laboratories was over 80% for glucose, alanine aminotransferase, aspartate aminotransferase, gamma-glutamyltransferase, alkaline phosphatase and triglycerides tests. The laboratories using fully automated spectrophotometers had an acceptable results rate of 89% (p = 0.001). The overall performance of the laboratories by cycles varied from 71% to 82%.Conclusion: This national PT programme identified the tests, which laboratories must improve their performance (urea, creatinine, uric acid, bilirubin, cholesterol, total protein, calcium, magnesium, phosphorus). It demonstrated the need for the use of routine appropriate internal quality control in all laboratories. The proficiency test programme should be extended to all clinical laboratories and target all biology disciplines

The application of sigma metrics in the laboratory to assess quality control processes in South Africa

Objective: This study aimed to determine the sigma metrics of analytes when using different total allowable error guidelines.Methods: A retrospective analysis was performed on 19 general chemistry analytes at Charlotte Maxeke Johannesburg Academic Hospital in South Africa between January 2017 and December 2017. Sigma metrics were calculated on two identical analysers, using internal quality control data and total allowable error guidelines from the Ricos biological variation database and three alternative sources (the Royal College of Pathologists of Australasia, the Clinical Laboratory Improvements Amendment, and the European Federation of Clinical Chemistry and Laboratory Medicine). Results: The sigma performance was similar on both analysers but varied based on the guideline used, with the Clinical Laboratory Improvements Amendment guidelines resulting in the best sigma metrics (53% of analytes on one analyser and 46% on the other had acceptable sigma metrics) and the Royal College of Pathologists of Australia guidelines being the most stringent (21% and 23%). Sodium and chloride performed poorly across all guidelines (sigma < 3). There were also month-to-month variations that may result in acceptable sigma despite poor performance during certain months.Conclusion: The sigma varies greatly depending on the total allowable error, but could be a valuable tool to save time and decrease costs in high-volume laboratories. Sigma metrics calculations need to be standardised

Virologic and immunologic outcome of treatment of HIV infection with a herbal concoction, A-Zam, among clients seeking herbal remedy in Nigeria

Abstract: This study was to determine the effectiveness (CD4 count and viral load) of a safe herbal concoction, α-Zam used by clients seeking herbal remedy for treatment of HIV infection in Nigeria. 51 patients taking α-Zam as complementary and alternative therapy through the herbal therapist were studied for a period of 16 months. Preliminary medical and laboratory examinations using WHO and CDC criteria were done after confirmation of HIV infection by Western blotting in the nearest teaching hospitals to the residence of the patients. Regular visits were paid to the patients after commencement of the α-Zam to assess the side-effects, drug interactions, toxicity and effectiveness of the herbal remedy. There was a statistical significance (P<0.05) between pre-treatment and post-treatment CD4 count. 4 (7.8%) of the patients had average increase in CD4 count of 262±16 cell/µL, 23 (45.1%) patients with average increase 310±16 cell/µL, 16 (31.4%) patients with average increase 456±25 cell/µL and 8 (15.7%) patients with average increase 510±36 cell/µL( %) were at WHO staging I , II, III and IV respectively within 4 months on herbal therapy. There was very marked reduction in viral (HIV-RNA) load with 41 (80.4%) and 10 (19.6%) HIV infected patients had undetectable viral load and <1000 copies/ml respectively after the therapy. All symptoms and signs associated with HIV infection in all patients fully subsided within 4 weeks of commencement of α-zam therapy and there was no evidence of negative drug interaction in those HIV patients using both the herbal and highly active anti-retroviral therapy (HAART). The study is in progress to determine periodic immunological outcomes of post therapy in all patients