Heartland Assays



Makowski AJ, Rathmacher JA, Horst RL, et al. 2017

Simplified 25-Hydroxyvitamin D Standardization and Optimization in Dried Blood Spots by LC-MS/MS., J AOAC Int. 2017 May 11
view abstract


Hollis BW, 2008

Measuring 25-hydroxyvitamin D in a clinical environment: challenges and needs., Am J Clin Nutr 88: 507S-510S
view abstract

Hollis BW, 2008

Phase switching SPE for faster 1,25-dihydroxyvitamin D analysis. 1986., Clin Chem 54: 446-7
view abstract


Hollis BW, 2007

Assessment of circulating 25(OH)D and 1,25(OH)2D: emergence as clinically important diagnostic tools., Nutr Rev 65: S87-90
view abstract

Hollis BW, Horst RL, 2007

The assessment of circulating 25(OH)D and 1,25(OH)2D: where we are and where we are going., J Steroid Biochem Mol Biol 103: 473-6
view abstract


Hollis BW, 2005

Circulating 25-hydroxyvitamin D levels indicative of vitamin D sufficiency: implications for establishing a new effective dietary intake recommendation for vitamin D., J Nutr 135: 317-22
view abstract


Hollis BW, 2004

Editorial: The determination of circulating 25-hydroxyvitamin D: no easy task., J Clin Endocrinol Metab 89: 3149-51
view abstract


Hollis BW, 2000

Comparison of commercially available (125)I-based RIA methods for the determination of circulating 25-hydroxyvitamin D., Clin Chem 46: 1657-61
view abstract


Hollis BW, 1997

Quantitation of 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D by radioimmunoassay using radioiodinated tracers., Methods Enzymol 282: 174-86
view abstract


Hollis BW, 1995

1,25-Dihydroxyvitamin D3-26,23-lactone interferes in determination of 1,25-dihydroxyvitamin D by RIA after immunoextraction, Clin Chem 41: 1313-4
view abstract


Hollis BW, Kamerud JQ, Selvaag SR, et al. 1993

Determination of vitamin D status by radioimmunoassay with an 125I-labeled tracer., Clin Chem 39: 529-33
view abstract


Hollis BW, 1986

Assay of circulating 1,25-dihydroxyvitamin D involving a novel single-cartridge extraction and purification procedure., Clin Chem 32: 2060-3
view abstract

Reinhardt TA, Hollis BW, 1986

1,25-dihydroxyvitamin D microassay employing radioreceptor techniques., Methods Enzymol 123: 176-85
view abstract


Horst RL, Littledike ET, Riley JL, Napoli JL, 1981

Quantitation of vitamin D and its metabolites and their plasma concentrations in five species of animals., Anal Biochem 116: 189-203
view abstract

© 2024 Heartland Assays - All rights reserved.