<s>[INST] How is T1D diagnosed? [/INST] A type 1 diabetes diagnosis can happen suddenly and unexpectedly. T1D often initially presents itself as the flu or malaise, but physicians must be quick to spot the telltale signs and symptoms of a possible T1D diagnosis. Tools used to determine a positive T1D diagnosis include blood glucose tests, an HbA1C test, and a ketone test Source: JDRF. Link: https://www.jdrf.org/t1d-resources/about/faq/. Field: Endocrine. Disease: Diabetes </s>