Muscle Length Measurement (Upper Arm: Scapula to Allantoid Length)
This test measures the length of your upper arm muscle structure from the shoulder blade (scapula) to a bony landmark near the elbow (allantoid). It may be used to evaluate muscle development, growth patterns, or physical condition in clinical settings.
["This test helps assess muscle length and structural proportions in the upper arm."]
Key facts at a glance
- LOINC
- 53675-5
- Short code
- Fet Scapula-L Length.max US.meas
- Synonyms
- Fet Scapula-L Length.max US.meas
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- us-measured
- 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 Might Be Ordered
Your healthcare provider may request this measurement if you have concerns about muscle growth, developmental delays, or conditions affecting muscle structure. It could also be part of a broader evaluation for conditions like muscular dystrophy, congenital limb differences, or post-injury recovery monitoring.
How the Test Works
A healthcare professional will use specialized tools to measure the distance between the scapula and the allantoid landmark on your upper arm. This is typically done in a relaxed position, ensuring accuracy. No blood, urine, or other bodily fluids are involved—just a straightforward physical assessment.
Preparation for the Test
No special preparation is needed. Wear comfortable clothing that allows easy access to your upper arm. If you have any known allergies to measurement tools or need accommodations, let your provider know beforehand.
What to Expect During the Test
The process is quick and painless. You’ll likely be seated or lying down while the provider uses a measuring device to record the length. You may feel slight pressure but no discomfort. Results are usually provided immediately or within a short follow-up visit.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Upper Arm Muscle Length Assessment
Frequently asked questions
How long will I need to wait for results?
Is this test painful or uncomfortable?
Can I eat or drink before this test?
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