Carnitinefreepdietdbsscnc
Key facts at a glance
- LOINC
- 74878-0
- Short code
- C0-DBS
- Synonyms
- Carnitine Free p diet DBS-sCnc
- Category
- chemistry
- Sample
- serum
- Container
- Guthrie card / dried blood spot (DBS) collection card with filter paper
- Units
- N/A
- Ref low
- 25
- Ref high
- 110
- Critical range
- 10 N/A – 200 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 0–99 years
- Method
- Tandem mass spectrometry (MS/MS) with stable isotope dilution
- CPT
- 82542
- SNOMED
- 395196007
- Specimen volume
- 2-3 dried blood spots (approximately 50-75 µL blood per spot)
- Stability
- Stable for 7 days at room temperature, 30 days at 2-8°C, longer at -20°C
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 48–168 hours
- Order
- routine
Reference range
Reference values vary by laboratory and patient population; consult lab-specific reference range. Generally, free carnitine (C0) in DBS post-therapeutic diet should be maintained within target treatment ranges established by the metabolic clinic.N/A
No fasting required. Specimen should be collected post-therapeutic diet to monitor treatment efficacy in patients with fatty acid oxidation disorders or organic acidemias.
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