Serum or Plasma Mass Concentration of Vitamin K-Dependent Carboxylated Proteins (MCP)
This test measures specific proteins in your blood that rely on vitamin K for proper function. These proteins help with blood clotting and other important processes in your body.
["Assesses vitamin K-dependent protein status, which supports blood clotting and metabolic functions."]
Key facts at a glance
- LOINC
- 13267-0
- Short code
- MuV IgM CSF-aCnc
- Synonyms
- MuV IgM CSF-aCnc
- Category
- chemistry
- Sample
- csf
- Container
- Sterile tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82784
- Specimen volume
- 1-2 mL
- Stability
- Immediate analysis required, Refrigerated: 1h
- Hemolysis max
- 200
- TAT
- 4–24 hours
- Order
- routine
Why This Test Might Be Ordered
Your healthcare provider may recommend this test if you have concerns about vitamin K deficiency, bleeding disorders, liver disease, or if you’re taking medications that affect vitamin K levels. It may also be used to monitor treatment for conditions like osteoporosis or certain blood clotting disorders.
What to Expect Before the Test
No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the test if it involves drawing blood from a vein. If you’re taking blood thinners, inform your provider beforehand.
What the Test Involves
A healthcare professional will draw blood from a vein in your arm. The blood sample is then sent to a lab for analysis. The test measures the mass concentration of certain proteins in your serum or plasma.
What the Results Mean
Results help determine if your vitamin K-dependent proteins are functioning normally. Low levels may indicate vitamin K deficiency, liver issues, or other health concerns. Your provider will discuss the results with you in the context of your overall health.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Vitamin K-dependent proteins, such as proteins C, S, and Z, play critical roles in blood clotting and bone metabolism. Abnormal levels can signal bleeding risks, liver dysfunction, or vitamin K deficiency. Monitoring these proteins helps guide treatment for conditions like anticoagulant therapy or inherited clotting disorders.
Short name
Vitamin K-dependent protein levels
Frequently asked questions
What causes abnormal vitamin K-dependent protein levels?
How are these results used to guide treatment?
Can lifestyle changes affect 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