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Both are built on the same sequencing platform and the same ecosystem-based interpretation. Core reads the current state of the bacterial ecosystem. Complete includes everything in Core, adds four systemic axes and summarizes all five gut axes on page 2. Choose Core when the question is the gut itself, and Complete when the picture is multi-system.

Adults, in good health or managing health concerns. You must be 18 or older to activate and register a test.

Scan the QR code on your activation card or go to portal.gutid.com, sign in or create an account, and activate before you collect. If a clinician recommended your test, they may have activated it already.

One pea-sized scoop of stool, collected at home with the catcher strip and the scoop on the tube’s cap.

No refrigeration is needed. Keep the sealed sample at room temperature until you ship it, within four weeks of collection.

About 4–5 weeks after the lab receives your sample and it passes quality checks. We email you when your report is ready in your portal.

No. GutID provides wellness and educational insights and is not a diagnostic test. It identifies which bacteria live in the gut and whether any are present in unusual amounts.

A breath test is required to diagnose SIBO. GutID identifies bacteria linked to SIBO that may be overrepresented in stool.

Core and Complete are microbiome-only.

Cancel within 24 hours of ordering for a refund, minus a 3% processing fee. Once preparation begins, orders cannot be canceled or returned. If a kit arrives damaged or a sample fails because of an error on our side, we replace it free.