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Muscle Enzyme Activity: Creatine Kinase (CK) or Lactate Dehydrogenase (LDH) Velocity in Tibial Muscle

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

This test measures how quickly certain enzymes in your tibial (shin) muscle break down or rebuild molecules, which helps assess muscle health or damage.

Quick summary

["Your doctor may use this to check for muscle injury, inflammation, or metabolic issues."]

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

Key facts at a glance

LOINC
98695-0
Short code
Motor NC velocity R tibial n
Synonyms
Motor NC velocity R tibial n
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
nerve-conduction
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 This Test Measures

Your blood sample contains enzymes like creatine kinase (CK) or lactate dehydrogenase (LDH), which play roles in energy production and cell repair. This test tracks how fast these enzymes work over time in your tibial muscle tissue, often linked to muscle function or injury.

Why It’s Done

Doctors may order this test if you have symptoms like muscle weakness, pain, or swelling, especially after trauma, exercise, or conditions affecting muscle metabolism.

Common Causes for Testing

Conditions such as muscle injuries (e.g., strains), certain infections, or metabolic disorders (e.g., mitochondrial diseases) might prompt this test.

What to Expect Before the Test

No special preparation is needed, but inform your provider about recent injuries, medications, or conditions that could affect results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Elevated enzyme velocities could signal muscle damage, inflammation, or metabolic dysfunction. Low or abnormal rates may indicate underlying metabolic or genetic muscle disorders.

Frequently asked questions

How long will results take?
Results are typically available within 1–3 business days, depending on lab processing times.
What does a ‘normal’ result mean?
A ‘normal’ result doesn’t guarantee no issue exists—it means your enzyme activity falls within expected ranges for your body. Always discuss results with your doctor.
Can I take supplements before this test?
Avoid high-dose supplements (e.g., creatine, vitamin E) 48 hours before testing, as they may alter enzyme activity.
  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