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Sigma Aldrich Fine Chemicals Biosciences Vitamin D metabolites in frozen human serum, 4 x 1 mL
Supplier: Sigma Aldrich Fine Chemicals Biosciences NIST972A

Vitamin D metabolites in frozen human serum has been used as a reference material for the calibration and standardization of 25-hydroxyvitamin D (25(OH)D) from dried blood spot samples by liquid chromatography-tandem mass spectrometry (LC-MS/MS).
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