Methods and kits for assaying a vitamin D moiety
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United States of America Patent
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Sep 6, 2022
Grant Date -
Feb 1, 2018
app pub date -
Jul 28, 2017
filing date -
Jul 29, 2016
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Abstract
The present invention provides methods and compositions, e.g., kits, for assaying a vitamin D moiety in a sample, comprising or using, inter alia, a buffer that is capable of dissociating a vitamin D moiety from its binding protein and/or a buffer of acidic pH, and at least two antibodies, e.g., at least two monoclonal antibodies, that are separately conjugated to particles, e.g., latex particles, wherein at least one of said antibodies (or the first antibody) has a specific binding affinity towards the vitamin D moiety, and at least another said antibody (or the second antibody) has a specific binding affinity towards the complex formed between the first antibody and the vitamin D moiety, if present in said sample. In some embodiments, the optical change due to the agglutination reaction between the antibodies and the vitamin D moiety is measured for determination of the amount of vitamin D content in the samples. Kits and reaction mixtures for assaying a vitamin D moiety in a sample are also provided.
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