Tibia Length (Longest from Radiograph)
This test measures the longest length of your tibia bone, which is one of the long bones in your lower leg. It is often used in medical imaging to assess bone growth, development, or structural integrity.
["This test helps doctors evaluate bone health and development in children or adults with suspected bone abnormalities."]
Key facts at a glance
- LOINC
- 11974-3
- Short code
- Fet Tibia Length Est from GA.Merz87
- Synonyms
- Fet Tibia Length Est from GA.Merz87
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- estimated-from-gestational-age-merz
- 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 This Test Is Done
Your healthcare provider may order this test if you have symptoms like leg length discrepancy, bone deformities, growth issues, or if you’re being evaluated for conditions like rickets, bone tumors, or congenital skeletal abnormalities. It’s also sometimes used in pediatric care to monitor bone development.
What to Expect Before the Test
No special preparation is needed. You’ll typically have an X-ray or CT scan of your leg, where a technician will take images of your tibia. This is a quick, painless procedure that usually takes a few minutes.
How the Results Are Interpreted
The results compare the tibia length to expected standards for your age, sex, and height. Differences may indicate underlying health concerns that need further evaluation, such as metabolic disorders or genetic conditions.
Common Conditions Affecting Results
Abnormal tibia lengths can be linked to conditions like growth hormone deficiencies, skeletal dysplasia, or chronic bone diseases. However, this test alone doesn’t diagnose a condition—it provides key information for further testing or follow-up.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
A tibia length test is primarily used as a diagnostic tool to identify potential skeletal or developmental issues. It helps guide treatment plans, especially in children, by monitoring growth patterns or detecting early signs of bone-related disorders.
Short name
Tibia Length Measurement
Frequently asked questions
What does an abnormal tibia length mean?
How often is this test repeated?
Is this test painful?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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