My endocrinologist recently ordered blood tests to determine C-peptide levels (corresponding to insulin), as well as 5 antibody tests associated with Type 1 diabetes, which is an autoimmune disease.

These were my results that show I definitely have Type 1 (LADA) diabetes, and NOT Type 2!

• C-Peptide: <0.2 (Low), Expected: 1.1-4.4
• GAD 65 Antibody: > 141.0 (High), Expected: <5.0
• Insulin Antibody: 13.3 (High), Expected: <0.5
• Zinc Transporter 8 Antibody: 59.4 (High), Expected: <15.0

• Islet Cell Cytoplasmic Antibody, IgG: <1.4 (Normal), Expected: <1.4

I also had a thyroid test, thyroid stimulating hormone (TSH), that was was high indicating I have low thyroid and so will start taking 50 mcg Levothyroxine.

• TSH, Third Generation: 6.230 (High), Expected: 0.400-4.100

There is an interesting article about LADA on the diaTribe web site.