University of Wisconsin–Madison

Assay What’s New

Targeted Panels for Specific Steroid Types by LC/MS/MS

Target panels include metabolic pathways for androgens, estrogens, progestins or glucocorticoids. A comprehensive panel is available measuring the following steroids: cortisol, testosterone, androstenedione, DHEA, progesterone, estradiol, and estrone.

*Steroid panels may be customized by request from the investigator but may require further R&D.

Extraction methods are available for the following media: serum, plasma, urine, saliva, feces, cell extractions, and hair.

Vitamin D Analysis for Human and Non-human Primates by LC/MS/MS

Assay Services now offers measurement for:

  • 25-hydroxy vitamin D2&3: A rapid method requiring only 50 µl of serum for human samples and for nonhuman primates. NIST (NIH Vit. D Metabolites Quality Assurance Program) parcipitation ensures our values match the national standard.
  • 1,25-dihydroxyvitamin D2&3: Validated against RIA for humans samples and shows increased sensitivity over other methods using derivitazation. Measurements have been performed for humans using 500 µl, and less for the common marmoset.
  • Vitamin D metabolite panel: Cholecalciferol (D3), 24,25 dihydroxyvitamin D3, 24,25 dihydroxyvitamin D2, 25 hydroxyvitamin D3, 25 hydroxyvitamin D2