What actually happens to your sample, and how to read the words 'accurate' and 'reference data' correctly.
You provide a saliva sample at home, a lab extracts the DNA from cells in that saliva and reads specific points in it, and those readings are compared against research to produce your report.
For the genes a wellness panel reads, yes, saliva carries the same DNA as blood, and unlike blood it needs no needle and no temperature-controlled transport, which is what makes at-home testing possible across India.
The lab reading of a specific DNA point is highly reliable, but what that point means for you is a probability and a tendency, not a fixed prediction, and honest reports show that range.
Because most global genetic databases were built on European DNA, and reading Indian DNA against them produces vaguer, less certain results, so India-aware reference data gives Indian readers more accurate answers.
Most consumer genetic reports are ready within about two to three weeks of the lab receiving your sample, though clinical tests can take longer.