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The article presents the analysis of the World Health Organization Expert Committee on the proposed international reference panels for validation of serological and nucleic acid based tests on hepatitis B and hepatitis C detection. The Committee has revealed progress on the development of the international reference preparation which is designed to assist the analytical sensitivity of tests to all hepatitis B surface antigen tests kits worldwide. Meanwhile, standard for heparin was introduced.

The article presents the analysis of the World Health Organization (WHO) Expert Committee on collaborative studies depicting cytokines, growth factors, and endocrinological substance. The Committee stresses their appreciation on the study which appropriately considered the valuable reagents of human chorionic gonadotrophin immunoassays. They also recommended the study on the suitability of a lyophilized recombinant human ciliary neurotrophic factor as Reference Reagent for bioassay.

The article presents the analysis of the World Health Organization (WHO) Expert Committee on the proposed establishment of the study on pertussis toxin standard as the International Standard for histamine-sensitizing. The Committee has revealed the standard relation between the National Insittute for Biological Standard and Control and the pertussis toxin assays. However, the Committee found that these assays appeared to differ in specific pertussis toxin activity.

The article presents the analysis of the World Health Organization Expert Committee on the proposed establishment of antibodies against human platelet antigen 5b as a Reference Reagent. This material is part of the collaborative studies which describes the calibration of a freeze-dried preparation of pooled human plasma. However, the Committee revealed that they did not received this proposal and therefore it needs further discussion for approval.