Osteocalcin

Specialist

also —

What it isOsteocalcin is a small protein made by osteoblasts (bone-building cells) and released into circulation during bone formation. It also functions as a hormone influencing glucose metabolism and male reproductive.

DoesMarks new bone formation; binds calcium and helps incorporate it into bone matrix; signals to pancreas and other tissues.

GoodMid-range osteocalcin signals active bone formation and healthy skeletal remodeling.

BadLow osteocalcin suggests reduced bone formation and may track diabetes and metabolic dysfunction. High osteocalcin reflects accelerated turnover.

Standard: Men 9–42 ng/mL; women 6–37 ng/mL.
Optimal: 18–30 ng/mL men, 15–28 ng/mL women (narrow target)
Modifiers: Tracks bone turnover; affected by vitamin K2 status (which carboxylates osteocalcin).

How to optimize

Lifestyle: Weight-bearing and resistance training drive bone formation.
Diet: Adequate vitamin K2; fermented foods (natto), aged cheeses.
Supplements: Vitamin K2 MK-7 (180–360µg/day) for carboxylation; vitamin D3; calcium from food.
Peptides: —
Drugs: Anabolic osteoporosis drugs (teriparatide, abaloparatide) raise osteocalcin; bisphosphonates lower it.

Vitamin D3Vitamin K2Calcium

Reference ranges are general adult lab norms; optimal ranges are editorial picks from the longevity literature — not medical advice. Always interpret results with your physician.

within Bone Density