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Osteocalcin

Published: July 27, 2026Updated: August 25, 2026

Osteocalcin is a protein hormone produced by osteoblasts, which is a key marker for bone formation and turnover.

Quick summary

Osteocalcin measures bone formation and turnover.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

Key facts at a glance

Units
ng/mL
Clinical utility
diagnostic
Result kind
quantitative
FDA-cleared
Roche Osteocalcin, Abbott Osteocalcin, Siemens Osteocalcin
interpretation: {"text":"May indicate reduced bone formation, as seen in osteoporosis or other conditions affecting bone metabolism.","label":"Low Levels"}; {"text":"May suggest increased bone turnover, which can be indicative of hyperparathyroidism, Paget's disease, or other bone disorders.","label":"High Levels"}

Osteocalcin is a non-collagenous protein hormone synthesized by osteoblasts, the cells responsible for bone formation. It plays a crucial role in the mineralization of bone matrix and is often used as a biomarker to assess bone metabolism.

Levels of osteocalcin in the blood can indicate the rate of bone formation. High levels may suggest increased bone turnover, which can be seen in conditions like hyperparathyroidism or Paget's disease, while low levels may indicate reduced bone formation, as seen in osteoporosis.

The reference range for osteocalcin is typically between 11–43 ng/mL. Deviations from this range can help clinicians diagnose and monitor various bone disorders, as well as assess the effectiveness of treatments aimed at improving bone health.

Frequently asked questions

What is the role of osteocalcin in the body?
Osteocalcin is a protein produced by osteoblasts that plays a crucial role in bone mineralization and is used as a marker for bone formation and turnover.
How is osteocalcin measured?
Osteocalcin is measured through a blood test, with levels typically falling between 11–43 ng/mL.
  1. 1
    Osteocalcin as a Bone Formation MarkerSource
  2. 2
    Clinical Utility of OsteocalcinSource

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy