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