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Osteocalcin (Bone-Globulin) Serum Concentration

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

This test measures the level of osteocalcin, a protein produced by bone cells that helps regulate calcium metabolism and bone formation.

Quick summary

["Osteocalcin helps assess bone health and activity."]

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

Key facts at a glance

LOINC
10702-9
Short code
O+P Stl ImStn
Synonyms
O+P Stl ImStn
Category
chemistry
Sample
stool
Container
Clean container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
immune-stain
Specimen volume
5 g
Stability
Refrigerated: 24h, Frozen: 7d
TAT
4–24 hours
Order
routine

What Is Osteocalcin Used For?

Osteocalcin is primarily used to evaluate bone turnover and activity. It can help identify conditions affecting bone formation, such as osteoporosis, bone fractures, or certain metabolic bone diseases. It may also be checked in patients with suspected hyperparathyroidism or other bone-related disorders.

How Is This Test Performed?

A blood sample is drawn from a vein, typically in your arm. The sample is then sent to a lab for analysis using an immunoassay method to measure osteocalcin levels.

Why Might My Doctor Order This Test?

Your doctor may order an osteocalcin test if you have symptoms or risk factors related to bone health, such as low bone density, frequent fractures, or unexplained bone pain. It can also be part of monitoring for conditions like Paget’s disease or hyperparathyroidism.

What Do My Results Mean?

Results are not typically interpreted alone but in relation to clinical symptoms and other tests. Elevated levels may suggest increased bone formation, while lower levels could indicate reduced bone turnover or metabolic bone disease. Your healthcare provider will discuss these findings with you.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Osteocalcin

Frequently asked questions

How often will I need this test?
The frequency depends on your medical condition and treatment plan. Some patients may need this test periodically to monitor changes in bone health, while others may only need it once for diagnosis or screening.
What are the possible side effects of having this blood test?
Most people experience only minor discomfort or bruising at the injection site. Rarely, there may be slight swelling or pain, but these usually resolve quickly. If you experience excessive bleeding, dizziness, or signs of infection, contact your healthcare provider.
Can I eat or drink before this test?
For most tests, you can eat and drink normally unless instructed otherwise by your doctor. However, follow any specific fasting guidelines they may provide, as they can vary depending on the test.
  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