A 50 year old obese female presented with recurrent candidial urinary infection & excessive thirst. She also gives history of frequent night time urination. Which is the first test you will prefer in this patient?
HbA1c
Oral glucose tolerance test
Plasma C-peptide level
Random plasma glucose level
Given clinical scenario is suggestive of Diabetes mellitus For screening, FBS or HbA1c is recommended. Because the patient has symptoms, a random plasma glucose of >200 mg/dL is adequate to diagnose diabetes mellitus. Other criteria include: FBS >126 mg/dL HbA1c>6.4% 2-hour plasma glucose >200 mg/dL during an oral glucose tolerance test C-peptide- determine normal cleavage of insulin from its precursor Normal C-peptide level with hypoglycaemia- surreptitious insulin use Low C-peptide level with hyperglycemia- pancreatic failure.
Diabetes Mellitus