Add to ORKGBackground Interpretation of parathyroid hormone (iPTH) requires knowledge of vitamin D status that is influenced by season. Objective Characterize the temporal relationship between 25-hydroxyvitamin D3 levels [25(OH)D3] and intact iPTH for several seasons, by gender and latitude in the U.S. and relate 25-hydro-vitamin D2 [25(OH)D2] levels with PTH levels and total 25(OH)D levels. Method We retrospectively determined population weekly-mean concentrations of unpaired [25 (OH)D2 and 25(OH)D3] and iPTH using 3.8 million laboratory results of adults. The 25(OH) D3 and iPTH distributions were normalized and the means fit with a sinusoidal function for both gender and latitudes: North>40, Central 32–40 and South<32 degrees. We analyzed PTH ...
Factors affecting vitamin D status in different populations in the city of São Paulo, Brazil: the Sã...
This study aimed to assess the relationship between vitamin D [25(OH)D] status and parathyroid hormo...
Background: Several lines of evidence indicate an important role for vitamin D in the prevention of ...
Interpretation of parathyroid hormone (iPTH) requires knowledge of vitamin D status that is influenc...
Background: 25 (OH) vitamin D3 (25(OH)D) and parathyroid hormone (PTH) are important regulators of c...
Optimal vitamin D status has commonly been defined as the level of 25-hydroxyvitamin D (25(OH)D) at w...
The British National Diet and Nutrition Survey of people aged 65 years and over in 1994-5 provided n...
SUMMARY: This analysis assessed whether seasonal change in 25-hydroxyvitamin D concentration was ass...
We sought the lowest serum total 25-hydroxyvitamin D (t-25OHD) values in geographic areas with four ...
OBJECTIVE: To compare levels of 25-hydroxyvitamin D (25[OH]D) associated with a plateauing of intact...
Introduction: Previous papers investigating vitamin D status have often outlined the significant rel...
Interpretation of parathyroid hormone (iPTH) requires knowledge of vitamin D status that is influenc...
Objective: It is unclear whether seasonal variations in vitamin D concentrations affect the hypothal...
The aim of the study was to describe the vitamin D status and its seasonal variations in women livin...
Objectives: Vitamin D deficiency, which causes secondary hyperparathyroidism, is considered to be a ...
Factors affecting vitamin D status in different populations in the city of São Paulo, Brazil: the Sã...
This study aimed to assess the relationship between vitamin D [25(OH)D] status and parathyroid hormo...
Background: Several lines of evidence indicate an important role for vitamin D in the prevention of ...
Interpretation of parathyroid hormone (iPTH) requires knowledge of vitamin D status that is influenc...
Background: 25 (OH) vitamin D3 (25(OH)D) and parathyroid hormone (PTH) are important regulators of c...
Optimal vitamin D status has commonly been defined as the level of 25-hydroxyvitamin D (25(OH)D) at w...
The British National Diet and Nutrition Survey of people aged 65 years and over in 1994-5 provided n...
SUMMARY: This analysis assessed whether seasonal change in 25-hydroxyvitamin D concentration was ass...
We sought the lowest serum total 25-hydroxyvitamin D (t-25OHD) values in geographic areas with four ...
OBJECTIVE: To compare levels of 25-hydroxyvitamin D (25[OH]D) associated with a plateauing of intact...
Introduction: Previous papers investigating vitamin D status have often outlined the significant rel...
Interpretation of parathyroid hormone (iPTH) requires knowledge of vitamin D status that is influenc...
Objective: It is unclear whether seasonal variations in vitamin D concentrations affect the hypothal...
The aim of the study was to describe the vitamin D status and its seasonal variations in women livin...
Objectives: Vitamin D deficiency, which causes secondary hyperparathyroidism, is considered to be a ...
Factors affecting vitamin D status in different populations in the city of São Paulo, Brazil: the Sã...
This study aimed to assess the relationship between vitamin D [25(OH)D] status and parathyroid hormo...
Background: Several lines of evidence indicate an important role for vitamin D in the prevention of ...