This document discusses diagnostic tests for diabetes and hypothyroidism. It describes the main types of diabetes as Type 1 resulting from a lack of insulin production, Type 2 involving insulin resistance, and gestational occurring in pregnant women. Tests for diagnosing diabetes include fasting plasma glucose, oral glucose tolerance, A1C, and random plasma glucose tests. Hypothyroidism is an underactive thyroid that does not produce enough hormones. It can be diagnosed through blood tests measuring thyroid-stimulating hormone and thyroxine levels.