Heartland Assays offers a wide variety of analytical services including but not limited to: Vitamin D, Vitamin D metabolites, Vitamin D binding protein analysis, 3-methylhistidine (3MH) analysis, physiological amino acid analysis, β-hydroxy-β-methylbutyrate (HMB) analysis, hormone analysis, and protein assays. We strive to achieve the highest quality lab standards and continue to meet the needs of our growing customer base.