Fasting insulin test in Estonia: price, where to take it, interpretation

Fasting insulin is one of the best early markers of metabolic risk, yet standard GP check-ups almost always leave it out. It costs 8–15 €, preparation is simple, but interpretation needs the right doctor.

Where to take it in Estonia

• SYNLAB Estonia — 8–12 €, no referral needed
• Medicum lab — 10–15 €
• GP under the health insurance fund — free with medical justification

How to prepare

• Fasting 10–12 hours (water is fine)
• No alcohol 48 hours before
• No intense exercise 24 hours before
• Blood draw in the morning between 7 and 10
• Bring your medication list — metformin, statins, hormones matter

Interpretation

Lab reference (typically 2–24 mU/L) is statistical, not metabolically optimal. Clinically:

• < 6 mU/L — optimal
• 6–10 mU/L — borderline
• 10–15 mU/L — early insulin resistance (Crofts et al., 2016)
• > 15 mU/L — clinically significant resistance

Why HOMA-IR beats insulin alone

HOMA-IR combines fasting insulin and glucose (Matthews et al., 1985). If you order insulin, add glucose — the calculation is free and gives a clearer picture.