Saves the questions and what to expect into your notes, next to the visit they belong to.
Keep this study
Lead
University of Washington
With
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Age
18–any
Sex
ALL
Healthy volunteers
Accepted
You may be eligible if
Age ≥ 18 years
Serum total 25(OH)D 10-50 ng/mL
Diagnosis of cystic fibrosis in accordance with CF Foundation Guidelines; OR, normal CONTROL
You may not be if
Primary hyperparathyroidism
Gastric bypass
Tuberculosis or sarcoidosis
Current pregnancy
Child-Pugh Class B or C cirrhosis (i.e. cirrhosis with ascites, hepatic encephalopathy, bilirubin \>=2 mg/dL, serum albumin \<=3.5 g/dL, or PT \>= 4 seconds)
History of kidney transplantation or end stage renal disease treated with dialysis
Use of vitamin D3 or vitamin D2 supplements exceeding a mean daily dose of 400 IU, within 3 months (wash-out allowed)
Use of 1,25(OH)2D3 or an analogue, calcimimetics, or medications known to induce CYP24A1 within 4 weeks (wash-out allowed)
Serum calcium \> 10.1 mg/dL
Hemoglobin \< 9 g/dL
Clareo Health | Clearance of 25-hydroxyvitamin D in Cystic Fibrosis
