Which of the following is responsible for the second step of the clotting process?

When third-party payers determine reimbursement, they consider UCR, which means:

A) usual, customary, and reasonable charges. B) usual and common rates. C) uniform, customary reimbursement. D) usual and customary resources.

Which diagnostic test calls for rectal administration of barium during the x-ray? 

A. Lower GI series B. Gastric lavage C. Upper GI series D. Sigmoidoscopy E. Gamma scan