Sterile Processing Practice Test (CRCST)

The Sterile Processing Practice Test (CRCST) is a free intermediate-level, 20-minute skill test from Science of Apps. It tests readiness for the HSPA CRCST (Certified Registered Central Service Technician) exam — cleaning and decontamination, instrument inspection, assembly and packaging, sterilization processes and monitoring, and sterile storage, infection prevention and quality — written to the 2026 content outline and ANSI/AAMI ST79. Score 70% or more on its 20 questions to earn a verifiable Sterile Processing Exam Readiness certificate (SOA-CRCS). Every question is based on published standards and research — including ANSI/AAMI ST79: Comprehensive guide to steam sterilization (AAMI), Guideline for Disinfection and Sterilization in Healthcare Facilities (2008, updated) (CDC), Certified Registered Central Service Technician (CRCST) (Healthcare Sterile Processing Association) — and each answer is explained with its source.

Yes. Science of Apps has a free Sterile Processing Practice Test built on the current HSPA exam outline for 2026 and 2027. It covers decontamination, instrument inspection, and packaging, scores you instantly and issues a verifiable certificate.

Read the four skill areas on this page, then take the 20-minute test online — no fee, course or sign-up. You see every answer explained when you finish. Score 70% or more and you get a Sterile Processing Exam Readiness certificate straight away, on screen, as a PDF and by email, with a credential ID anyone can verify.

Yes. The questions are original scenarios written by Science of Apps, and each one is based on a public source you can read: ANSI/AAMI ST79: Comprehensive guide to steam sterilization (AAMI); Guideline for Disinfection and Sterilization in Healthcare Facilities (2008, updated) (CDC); Certified Registered Central Service Technician (CRCST) (Healthcare Sterile Processing Association); Bloodborne Pathogens Standard (29 CFR 1910.1030) (OSHA); Clinical safety: hand hygiene for healthcare workers (CDC). The source is shown under each question and linked in the answer review. Science of Apps doesn't copy questions from other tests.

Four skill areas with five questions each, drawn from a bank of 10 per area so a retake brings new questions: Cleaning and Decontamination (Point-of-use treatment, Manual and mechanical cleaning and PPE and safety); Inspection, Assembly and Packaging (Instrument inspection, Tray assembly and Packaging materials); Sterilization Processes and Monitoring (Steam, Low-temperature methods and Biological and chemical monitoring); Storage, Infection Prevention and Quality (Sterile storage, Event-related sterility and Tracking and quality). Every question is an original scenario written to the 2026–2027 standard, with the published source named under it.

Sterile processing technician, Central service technician, Sterile processing trainee, Instrument technician and Surgical services aide. It suits anyone who wants a quick, verifiable way to show Sterile Processing knowledge in 2026 and 2027, from students and career switchers to experienced professionals.

The CRCST exam has 175 multiple-choice questions (150 scored) with a 3-hour limit. You also need 400 hours of hands-on sterile processing experience to be fully certified.

Mainly ANSI/AAMI ST79 (steam sterilization), ST58 (chemical sterilization), the CDC disinfection guideline and the HSPA Central Service Technical Manual — the same references cited here.

No. It is an independent practice test written to the publicly available Sterile Processing content outline for 2026 and 2027, for checking your readiness before you book the real exam. Passing earns a Science of Apps certificate rather than the official credential.

Yes. The test is online, in English and free everywhere — people take it from India, the US, the UK, Europe, Africa, Latin America and Asia-Pacific. Your certificate is dated with your own local date and can be verified from anywhere at scienceofapps.com/certification/verify/.

20 questions — 5 from each of 4 skill areas — with a 20-minute limit. You need 70% (14 of 20) to pass and 90% for distinction.

We rate it Intermediate: assumes hands-on experience in the role. It has 20 scenario questions — 5 from each of 4 skill areas — and a 20-minute limit. You need 70% (14 of 20) to pass and 90% for distinction.

Nothing. There is no fee to take a test, to receive the certificate, to have it emailed or to verify it, and no sign-up.

On our server, not in your browser. The answers never reach the page until you submit, so a certificate can only be earned by passing. Each certificate gets a unique credential ID stored by Science of Apps.

You see your score for each area and every question with the correct answer and why, with the published source behind it. You can retake after 30 minutes, and the retake draws questions you haven't seen yet.

No. Every certificate is dated, so it always shows when you passed. Retake a test any time for a newer date or a higher score.

Yes. After you pass, Add to LinkedIn opens the Licenses & certifications form with the certificate name, Science of Apps as the issuer, the issue date, your credential ID and the verification link filled in. You can also download it as a PDF or PNG, and it's emailed to you as a PDF.

Every certificate has a credential ID and a QR code. Scanning it, or entering the ID at scienceofapps.com/certification/verify/, shows the holder's name, the certification, the score and the issue date from our records.

No. They are Science of Apps' own assessments of applied skill. They aren't issued by a university or standards body, and they work best alongside a portfolio that shows the skills in real work.