Higher 25(OH)D2 is associated with lower 25(OH)D3 and 1,25(OH)2D3.
Swanson CM, Nielson CM, Shrestha S, Lee CG, Barrett-Connor E, Jans I, Cauley JA, Boonen S, Bouillon R, Vanderschueren D, Orwoll ES. Higher 25(OH)D2 is associated with lower 25(OH)D3 and 1,25(OH)2D3. J Clin Endocrinol Metab. 2014 Aug; 99(8):2736-44.