Read the most recent glucose measurement from the FreeStyle sensor, with the instant it was actually measured. The value is the latest one upstream holds, not a live reading — always report measured_at rather than calling it 'now'. Informational only: this is not a medical device and must not be used for any treatment decision.

Glucose readings over the last N hours (max 12), with time-in-range computed against the account's own target band. Upstream holds only about 12 hours of detailed data and ignores any longer request, so the response always states the range it actually covered and sets truncated when that is less than asked — report that range, never the one requested. Collection gaps are listed separately and are not interpolated across; a percentage over a series with gaps describes only the covered time. Informational only: not a medical device, and not a basis for any treatment decision. This is not an HbA1c or GMI estimate — those need weeks of data.