Fasting & PP blood sugar test in Tirupati
Blood sugar testing measures the concentration of glucose in the bloodstream. Fasting Blood Sugar (FBS) is tested after an 8–10 hour overnight fast, and Post-Prandial (PPBS) is checked exactly 2 hours after a meal. At Nareddy Care Hospitals in Tirupati, glucose tests are performed in our own laboratory with immediate doctor evaluation.
What do Blood Sugar results mean?
For post-meal (PPBS) testing: below 140 mg/dL is normal, 140–199 mg/dL is prediabetes, and 200 mg/dL or higher suggests diabetes.
Who should get an Blood Sugar test?
- Individuals with diabetes monitoring treatment effectiveness
- Adults aged 30 and older undergoing routine metabolic health screening
- Anyone experiencing frequent thirst, nighttime urination, or unexplained weight loss
- Pregnant women screening for gestational diabetes
How to prepare
For fasting sugar, do not eat or drink anything except plain water for 8 to 10 hours overnight before sample collection. For post-prandial sugar, have your normal meal and give the second sample exactly 2 hours after your first bite.
Questions people ask
Can I drink tea or coffee before a fasting sugar test?
No. Tea, coffee, milk, or biscuits will elevate your blood glucose. Only plain water is allowed during the fasting period.
What is the difference between fasting sugar and HbA1c?
Fasting sugar shows your glucose level at one specific moment in time. HbA1c shows your average sugar control over the previous 3 months and does not require fasting.
Should I take my morning diabetes tablets before the fasting test?
Do not take morning sugar tablets or insulin until after the fasting blood sample is drawn, to avoid dangerous low blood sugar (hypoglycemia).