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Osteocalcin (Bone-Specific)

Published: August 9, 2026Updated: August 16, 2026

This test measures the level of osteocalcin, a protein produced by bone cells that helps signal new bone formation. It’s often used to assess bone health and activity.

Quick summary

["Osteocalcin helps track bone remodeling and may indicate conditions like osteoporosis or bone growth disorders."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
89234-9
Short code
OB Referral note
Synonyms
OB Referral note
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
obstetrics
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What Is Osteocalcin Used For?

Osteocalcin is primarily used to evaluate bone metabolism and activity. Higher levels may suggest increased bone formation, while lower levels could indicate reduced bone turnover or conditions like osteoporosis.

How Is This Test Performed?

A blood sample is drawn from a vein, typically in your arm. The sample is sent to a lab where it’s analyzed using an immunoassay method to detect osteocalcin levels.

Who Might Need This Test?

Your doctor may order this test if you have symptoms of bone-related issues (e.g., pain, fractures), are at risk for osteoporosis, or are undergoing treatment for bone disorders.

What Do Results Mean?

Results alone don’t provide a diagnosis but can help guide treatment decisions. Your doctor will compare your levels to your medical history and other test results for interpretation.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Osteocalcin

Frequently asked questions

Why might my osteocalcin levels be checked?
Your doctor may recommend this test to monitor bone health, assess treatment effectiveness for conditions like osteoporosis, or evaluate symptoms like bone pain or fractures.
Can diet or exercise affect osteocalcin levels?
Yes, lifestyle factors like calcium intake, vitamin D levels, and physical activity can influence bone metabolism. However, results should be interpreted in the context of your overall health.
Is fasting required for this test?
No fasting is typically required, but follow your doctor’s instructions if you have specific dietary restrictions or medical conditions.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

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

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy