We’ll tell you. The free preview includes an eligibility check — if your file falls below the coverage floor for a confident call (typically <1,000 usable Y-SNPs), you won’t be charged and we’ll suggest a higher-coverage upgrade test as a partner referral. The most common cause is an older AncestryDNA chip that doesn’t cover the Y well, or a female sample with no Y-DNA at all.
What if my file doesn’t have enough Y-SNPs?
What the free eligibility check does when Y coverage is too low — no charge, plus an upgrade option.