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Vitamin D, 25-OH Total RIA, IBL-America

Supplier: IBL-America
Radioimmunoassay (RIA) for the determination of 25-hydroxyvitamin D3 and D2 (25-OH-D3 and 25-OH-D2) in serum.

  • For research use only, not for use in diagnostic procedures
  • A competitive RIA assay
  • Novel pre-treatment step eliminates the use of organic solvent precipitation and centrifugation

The 25OH Vitamin D Total RIA is a competitive RIA assay, based on patented monoclonal antibodies, with a novel pre-treatment step performed inside the RIA coated tubes.

The novel pre-treatment step of the 25OH Vitamin D Total RIA takes place directly in the coated tubes. It uses a unique displacement reagent that displaces the 25OH Vit D from the binding proteins. The advantage of the technique is that it works at neutral pH so it can be used in the presence of the antibodies, which is not the case for the other known methods, most of them using acidic or alkaline pH.

Furthermore, this novel pre-treatment step, which eliminates the use of organic solvent precipitation and centrifugation, highly facilitates the automation on e.g. RIAMAT, Tecan or BioTek pipetting systems. The assay uses small sample volume (25 µL) which makes it particularly suitable for pediatric samples. The incubation steps are performed at room temperature without need for dedicated equipment.

The assay is calibrated to the ID-LC-MS/MS reference method developed by Prof. Dr. Linda THIENPONT from the Ghent University in Belgium, as encompassed in the Vitamin D Standardization Program initiative. It shows a high correlation with other commercially available LC-MS/MS and RIA assays.



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Description Supplier No. VWR Catalog Number Unit Price Quantity
Vitamin D, 25-OH Total KIR1971 102968-328 Each Retrieving Restricted

Temperature sensitive This Item is temperature-controlled and may have specific temperature and storage requirements for shipping/delivery.

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  • State issued document with your organization's Federal Tax ID Number
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  • City or County issued Business License
  • State Department of Health Services License
  • Any other ID issued by the State that includes the business name and address

* Please note if your account is within the State of California two of these pieces of identification will be required.
VWR will not lift restrictions for residential shipping addresses.

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