CHORUS - home page

CHORUS

Collaborative Hypertext of Radiology


Technical stuff / Miscellany

About CHORUS
Disclaimer
Copyright

 

Schilling test


Part 1
0.65 uCi Co-57 B-12 + 1000 ug unlabelled B-12 injection

Unlabelled B-12 saturates all the liver and blood binding sites thus promoting urinary excretion of the labeled vitamin B-12.
  • normal 24-hr specimen of 1 liter: 10-40% of administered dose
  • excretion < 7% suggests pernicious anemia or malabsorption

Part 2
same as above plus intrinsic factor

low urinary excretion indicates malabsorption


Brian Funaki, MD  -  8 February 1995
Last updated:  1 October 2013


 

Related CHORUS documents:
sprue / celiac disease
Crohn disease
amiodarone
small bowel lymphoma
large gallbladder
achalasia

 

Copyright © 2013, Charles E. Kahn, Jr.