National Biological Standards and National Biology
National Biological Standards
It refers to the use of international standards, or our country's own development (there is no international biological standard) to quantitatively determine the potency or toxicity of a productreference materialIts biological activity is expressed in international units (IU) or in units (U).
National Biological Reference
National biological reference lines refer to biological reagents, biomaterials or specific antisera that are calibrated with international references, or developed by our country (those without international references) for qualitative identification or disease diagnosis of microorganisms (or their products); or Refers to reference substances used for quantitative detection of the biological potency of certain products, such as reference substances used for the determination of measles vaccine titer or toxoid flocculent units, whose potency is expressed in specific active units, not in (IU).
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