CCHT-A

NNCC states the CCHT-A is reserved for clinical dialysis technicians with at least 5,000 hours and 5 years of experience. That is a higher bar than the entry-level CCHT, which NNCC lists for practicing dialysis technicians with a high school diploma or GED. Verify your own eligibility and documentation requirements with NNCC before applying.

NNCC lists a limited-time price of $100 for the CCHT-A exam, effective 4/1/2026; the fee was $225 before that date. Because NNCC describes this as a limited-time price rather than a permanent one, confirm the current fee on the NNCC site before you pay.

It is an English-language certification exam delivered through NNCC's testing partner, C-NET, at C-NET testing sites. NNCC states its exams are meant to establish that a certified individual meets the requirements of a nationally certified healthcare professional practicing in the United States. Item count, time limit, and passing score are not published on the NNCC page reviewed here.

Expect it to be harder. The eligibility floor of 5,000 hours and 5 years means the exam assumes working command of routine treatment, so questions reward judgment across water treatment, machine troubleshooting, and patient teaching rather than basic recall. NNCC does not publish a pass rate, so treat any advertised difficulty ranking with suspicion.

Start with the reference list NNCC publishes under the Practice/Prepare tab for the CCHT-A. Then audit your weaker domain first, since experienced technicians typically lose points on the non-clinical material they touch least. Build a short review cycle around water treatment and quality concepts, then move to clinical scenarios that combine several domains at once.

NNCC explicitly warns that books and flash cards marketed as preparation materials for its exams are not created or endorsed by NNCC, and states their use is not recommended. Spend your preparation time on the recommended references instead. If a product claims to be official, verify that claim directly with NNCC before purchasing.

NNCC's page reviewed here does not state a retake policy, waiting period, or fee for the CCHT-A, so this cannot be answered from the available source. Contact NNCC directly for the current retake rules before you schedule, and plan your first attempt as though it is the only one.

The validity period is not stated on the NNCC page reviewed here, so confirm it with NNCC. NNCC does say that certificants who sign up for its mobile service receive a certification reminder by text message at least 90 days before their certification expiration date, along with other certification news.

NNCC's testing partner, C-NET, offers special accommodations in conjunction with the Americans with Disabilities Act. NNCC specifically notes that English as a second language is not considered by the ADA to be a disability, so ESL alone does not qualify. Request any ADA accommodation through C-NET before scheduling.

Under-preparing the domains that are not chairside care. Technicians with strong clinical instincts often skip water treatment math, disinfection concepts, and quality-improvement vocabulary, then meet those items cold on exam day. Treat all four domains as equally worth your study hours and rehearse explaining concepts out loud to expose gaps.