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Total Osteocalcin (Bone Formation Marker)

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

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

Quick summary

["Osteocalcin reflects your body’s bone formation activity."]

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

Key facts at a glance

LOINC
36069-3
Short code
XR tomo L-spine
Synonyms
XR tomo L-spine
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
xr-tomography
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

Why Is This Test Done?

Your healthcare provider may order this test to evaluate bone health, monitor conditions affecting bone metabolism (such as osteoporosis, Paget’s disease, or hyperparathyroidism), or assess treatment responses in patients with bone-related disorders.

What Does a Result Mean?

Higher than expected levels may suggest increased bone formation, while lower levels could indicate reduced bone formation or metabolic bone disease. Results are interpreted in the context of your overall health and medical history.

Sample Collection and Preparation

A blood sample is drawn from a vein, typically in your arm. The blood is processed to separate serum (the liquid part) for testing. This test does not require fasting.

Common Conditions Monitored

Osteocalcin is often checked in patients with suspected bone disorders, including conditions like osteoporosis, hypercalcemia, or metabolic bone diseases. It may also be used to monitor long-term effects of medications or therapies on bone health.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Osteocalcin

Frequently asked questions

What Are My Next Steps If My Results Are Abnormal?
If your osteocalcin levels are outside the expected range, your healthcare provider will discuss further steps, such as additional tests, lifestyle adjustments, or treatment planning based on your specific situation.
How Often Should I Get This Test?
The frequency depends on your medical condition, treatment plan, and recommendations from your provider. Some patients may need this test annually or more often if they have ongoing bone-related concerns.
Can Diet or Exercise Affect This Test?
Dietary factors like calcium intake or vitamin D levels may indirectly influence bone health but do not typically affect osteocalcin levels directly. Regular exercise, especially weight-bearing activities, supports bone formation and may influence results over time. Always follow your provider’s guidance on timing for test-related lifestyle adjustments.
  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