You reach the footer. A small badge says “fair.” You click. A new page opens with dates, lab names, and words like RNG and RTP. Now what?
This guide shows how to read those audit pages the way a pro does, in plain words. You will see what the reports mean, what they do not prove, and how to check a seal in under a minute.
Three groups matter. A lab tests and certifies. A regulator sets the rules and checks if sites follow them. ADR is a neutral service for player disputes.
Labs are private and technical. They look at code, game math, and how results come out. Regulators publish rules and check tech compliance. For an example of what a regulator asks labs to test, see the UK rules on requirements for compliance testing. ADR sits between you and the casino if you have a stuck complaint. It is not a lab, but it can look at facts and make a fair call.
Some labs also run ADR. For instance, eCOGRA handles Alternative Dispute Resolution (ADR) for certain markets. This is handy if your dispute is about payouts or bonus terms and you need an outside view.
Use this table as a quick compare. It shows what each lab tends to test, what you will see on a public page, and how you can check it fast.
| eCOGRA | RNG, RTP checks, game math fit, platform fairness; ADR in some areas | Operator name, scope (games or platform), status, issue date | Click the seal; confirm the page sits on the lab site; match operator and scope | Varies by operator; some periodic checks | Operator’s seal page; also see “Approved Sites” on the lab site |
| iTech Labs | RNG design and output, game rules fit, version checks | Certificate with game/provider scope, test notes, date, signature | Seal opens a cert page; match game/provider; confirm date and version | One-off per version + periodic reviews | Methodology |
| GLI (context) | Publishes standards (e.g., GLI-11) used by labs and regulators | Standards, not per-casino seals | Players can read standards to see test depth | N/A | GLI-11 |
Open a real seal page. Slow down. Read the top line first: the operator name. It must match the casino brand you are on. If the name is a group company, look for the brand list on that page.
Next, scope. Does the certificate cover the whole platform, or only some games or a single provider? If it uses eCOGRA terms like the eCOGRA’s Safe and Fair seal, check the parts it claims: fair gaming, player protection, or both.
Find the issue date and, if shown, the period tested. Fresh dates are a good sign. If the date is old and the site has had big game updates, the cert may not cover today’s version.
Scan for “RNG” and “RTP.” RNG is the random number generator. It should be tested with a standard set of checks. iTech Labs and others explain how they test RNGs, like output uniformity, sequences, and seed safety. RTP is return to player. This is a long-term rate, from math. Your own session will swing above or below it.
Some certificates or lab reports also list the test suite used. One common suite is the NIST SP 800-22 test suite. It checks patterns in random streams. You may also see words like “diehard” or “TestU01” in older or deeper docs. These help show the lab did real math checks.
Check sample size. A good RNG test uses long runs of numbers. If a report talks about “confidence,” it means how sure the test is that the RNG is fair within a margin. Bigger samples reduce noise.
Look for the coverage list. Slots, table RNG games, live games (if any), jackpots, and bonus tools. For each, the report should state the version or build. If the site patches a game, the version should change and may need a re-check.
Why do some lab pages feel more solid? One reason is lab accreditation. Look for ISO/IEC 17025. It means the lab has proven it can run valid tests and keep quality controls.
You may also see game and platform tests mapped to known standards like GLI-11 for RNG gaming devices. Labs and regulators use these as a baseline to make sure tests are deep and repeatable.
Live dealer games do not use an RNG for card draws or wheel spins. They use real gear, cameras, and strict steps. Labs and regulators check shuffle tools, wheels, camera angles, and dealing rules. They also look at how data moves from studio to your screen.
Crash or instant games use fast RNG calls with special math. The lab will note how the curve or multiplier is built. It checks for bias at the start (seed) and in the stream. Version control matters here, since small code changes can shift risk.
Progressive jackpots add shared prize pools. These can span brands and regions. Regulators may publish tech notes on this, like the New Jersey Division of Gaming Enforcement tech lab. Look for clear rules on how the pool grows, how wins are recorded, and how resets work.
Lastly, patches. When a game gets fixed or tuned, the version should change. Good audit pages note this. If your favorite slot just got a “balance update,” make sure the audit still covers that build.
Fair games help, but safe play also means support and limits. A good casino will link to help groups like GamCare. It will have clear tools for time-out, limits, and self-exclusion.
Look for basic data care too. Sites should use strong HTTPS and two-factor login. Payment pages must be clean and load from trusted sources. If anything looks odd, do not deposit yet.
Make a short list. Pick sites with live, clickable seals. Favor pages with recent dates and clear scope that matches the games you want to play. Note how often a casino updates its reports. Sites that update on time tend to be better at ops in general.
Want a fast cross-check before you sign up? For Spanish-speaking readers who prefer live tables, this curated hub of mejores casinos en vivo keeps an eye on lab seals and last-audit dates. Use it to spot which brands maintain fresh certs for live games.
Disclosure: If you use outbound links to join a site, we may earn a fee. Our audit checks are done the same way, with or without any fee.
Red flags:
Myths:
How often are audits updated?
It depends. Some are tied to game version changes. Some are periodic, like quarterly platform checks. Always read the date and look for version notes.
Is eCOGRA better than iTech Labs?
Both are solid, independent labs. They have different styles and scopes. Focus on what is tested, the date, and how you can verify it, not the logo alone.
What is the difference between RTP and house edge?
RTP is what goes back to players over time. House edge is what the casino keeps over time. RTP + edge = 100% (in simple terms).
Are live dealer games audited?
Yes, but not with RNG tests. Labs and regulators check dealing steps, cameras, and equipment. They also review how results are sent and logged.
How can I file a dispute?
First, use the casino’s own complaint path. If that fails and your market supports ADR, file with the named ADR (e.g., eCOGRA in some cases). In the UK, you can also use IBAS.
Author: Alex Grant — former compliance analyst in online gaming; reviewed 120+ lab certificates since 2018.
Reviewed by: Dana Lee, MSc Information Security, ex‑QA lead at a licensed operator.
Last updated: 2026‑07‑07
Change log: v1.0 — initial publication with seal-check steps, standards overview, and verification table.