Answer:
Option a. is correct answer.
Step-by-step explanation:
a. Fasting blood plasma glucose: After an overnight fast, this test assesses the level of glucose in the blood. Diabetes is present when the fasting plasma glucose level is 126 milligrammes per deciliter (mg/dL) or greater on two different occasions. Additionally, patients with the typical signs of hyperglycemia (excessive thirst, frequent urination, unexplained weight loss) might be diagnosed with a random plasma glucose level of 200 mg/dL or greater.
b. Thyroid Stimulating Hormone (TSH) Level: Diagnosing diabetes does not directly depend on TSH testing. Instead, it is mostly used to evaluate thyroid function and identify thyroid conditions like hypothyroidism or hyperthyroidism.
c. Urine glucose and acetone levels: Although formerly employed as key diagnostic tests to identify diabetes, urine glucose and acetone levels are no longer advised. Diabetes can be diagnosed more precisely and reliably by measuring blood glucose levels.
d. Cardiac enzymes: Diagnosing diabetes does not depend on cardiac enzymes. They serve as markers for evaluating the damage to the heart muscle in cases like myocardial infarction (heart attack).