C-Peptide – Fasting, Serum

The C-Peptide Fasting test checks how much insulin your body is making. It is helpful for people with diabetes and those who have low sugar problems.

🔹 Sample Required: Blood (Serum)
🔹 Fasting: Yes, 8–10 hours (only water allowed)
🔹 Report Time: Within 24 hours

Why is this test important?

• To check if your body is producing enough insulin

• To help doctors know the type of diabetes (Type 1 or Type 2)

• To monitor diabetes treatment

• To find the cause of frequent low sugar (hypoglycemia)

👉 This test helps your doctor plan the best treatment for you.

Test Name: Fructosamine – Serum

Clinical Significance:
Fructosamine is a glycated serum protein, mainly glycated albumin. The Fructosamine test reflects the mean plasma glucose concentration over the previous 2–3 weeks, making it a valuable tool for short-term glycemic monitoring. It is particularly useful in situations where HbA1c may be unreliable (e.g., hemoglobinopathies, hemolytic anemia, pregnancy, recent transfusions).

Reference Ranges (may vary by lab):

• Normal: 200 – 285 µmol/L

• Diabetes (poor control): >285 µmol/L

Indications:

• Monitoring short-term glycemic control

• Evaluation of therapy adjustments in diabetes

• Useful in conditions affecting HbA1c accuracy

• Gestational diabetes monitoring

Preparation:

• No fasting required.

• Blood sample taken at any time of the day.

Turnaround Time:

• Fast reporting – Results available within the same day (24 hours).