100% REAL
Perhaps the best way to give you an idea as to the quality of UTAK Vitamin D Controls is to begin by telling you what is, and what is NOT used to make them.UTAK uses a 100% REAL human serum matrix to manufacture its Vitamin D Controls
- We do NOT add any preservatives, period
- We do NOT use stripped serum
- We do NOT use "human-based" serum
- We do NOT fortify our serum matrix pools with horse serum
Standardized Use
UTAK's use of a 100% REAL human serum matrix enables its Vitamin D Controls to be utilized with all contemporary reference methods and immunoassays.- HPLC
- LC-MS
- LC-MS/MS
- Siemens® Centaur Vitamin D Total Assay
- DiaSorin LIAISON®




