Contact: who answers which question

The Oncology Nursing Certification Corporation decides eligibility, issues scores and renews the credential. Take these to ONCC through oncc.org:

• whether your hours or contact hours count, and an application that is still pending;
• a request for testing accommodations;
• a score report, a retest, or DoubleTake, the second attempt bought with the first application;
• renewal, the ILNA and points, or a lapsed credential.

PSI runs the test centers. Once ONCC has approved you, the Authorization to Test comes from PSI by email, and finding a center, booking a seat and changing an appointment go through PSI's ONCC page.

The Oncology Nursing Society sells the Chemotherapy Immunotherapy Certificate course and other courses, and runs membership, which brings the lower ONCC exam fee. Questions about a course, its post-test or a membership go to ons.org. APHON handles its own memberships for pediatric hematology and oncology nurses. Your RN license itself sits with your state board of nursing.

With no inbox, the quickest check is one you can run yourself:

• A table row names its ONCC document, the page and the date it was read. Check the cited page of that document; where it now reads differently, trust the document over this site.
• A practice question explains every option. If a key looks wrong to you, take the page address and the question text to a current reference such as the Core Curriculum or the guideline the topic page names, or to an oncology educator at your workplace.

The documents behind the tables are listed on About.

An app button leads to the store page of a phone app for the same exam, where there is one; otherwise it leads to this site's own pages. Billing, refunds and support belong to the developer, through that store page; this site has no access to app accounts.