Mitochondrial Respiratory Testing — With Control
A laboratory test that evaluates mitochondrial respiratory function. A control sample is included to help verify that the test results are valid.
["The control helps confirm that the laboratory test worked correctly; your clinician will interpret the result in the context of your symptoms."]
Key facts at a glance
- LOINC
- 37286-2
- Short code
- MR TMJ-L WO contr
- Synonyms
- MR TMJ-L WO contr
- Category
- liver
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- mr
- 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 is this test?
Mitochondrial respiratory testing evaluates how efficiently mitochondria produce energy from nutrients. The abbreviated test name includes a control, which is used to check the performance and validity of the laboratory assay.
Why might I need this test?
This test may be used when symptoms suggest an impairment in cellular energy production, such as unusual muscle weakness, exercise intolerance, fatigue, or problems affecting more than one organ system. Testing may also be part of an evaluation for a suspected mitochondrial disorder.
How is the test performed?
A laboratory technician analyzes a patient sample according to the specific laboratory method and compares it with a control. The type of specimen and testing procedure depend on the exact ordered assay, so the laboratory or ordering clinician should provide those details.
How do I prepare for the test?
Follow the preparation instructions provided by the laboratory. Some mitochondrial tests require fasting, timed collection, or avoidance of strenuous exercise beforehand; do not stop prescribed medicines unless your clinician instructs you to do so.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal results may indicate reduced mitochondrial energy production and can occur with mitochondrial disorders or certain other conditions. An abnormal control, poor sample quality, medication effects, or another pre-analytical issue can also affect the result, so your clinician should interpret the complete laboratory report.
Short name
Mitochondrial respiratory test
Frequently asked questions
What does the control result mean?
Does an abnormal result always mean I have a mitochondrial disorder?
What specimen is used for 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