Product Description

Normal human serum is tested for complement activity and certified to possess fully functional classical and alternative pathways of activation. Our NHS is also referred to in our product descriptions as the NHS complement standard.A functional lectin pathway is assumed to be present, but standard assays for all of its initiating components (ficolins, MASPs, and MBL) have not been established.Therefore, we have not tested specifically for lectin pathway activity.

NHS was prepared from a large number of donors.Each unit of blood was collected without anticoagulants and each was individually tested for transfusion-transmissible diseases before pooling (see Precautions/Toxicity/Hazards below).After coagulation, the liquid portion was separated by centrifugation.The different units were pooled, filtered through a 0.22 µm filter, aliqoted and frozen at -80^oC.

All testing for complement activity was performed on the subsequently thawed samples to guarantee that the functional activity reported is what customers will receive when the samples are thawed.Complement activity is stable for several years if NHS is stored at -70^oC or below continuously.A slight degradation of activity may be observed following additional freeze thaw cycles.

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Complement Technology，Inc。（CompTech）致力于为生物医学研究界提供最高质量的补充试剂。CompTech的业主和员工在补充领域拥有超过80年的综合经验。我们是我们销售的补充试剂的原始制造商，我们努力成为最优质试剂的最低成本供应商。我们不断扩大我们生产的试剂系列，以满足不断变化的研究需求。我们欢迎您提供所需新试剂的建议。