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Serum/plasma mass concentration of vitamin G (likely vitamin K)

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

This test measures the amount of vitamin K in your blood, which is important for blood clotting and bone health. Low levels may indicate absorption issues or certain medical conditions.

Quick summary

["Vitamin K helps your blood clot properly and supports bone health—check your levels if you have bleeding problems or bone concerns."]

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

Key facts at a glance

LOINC
24119-0
Short code
CMV IgM SerPl Ql IA
Synonyms
CMV IgM SerPl Ql IA
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia
CPT
82784
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 Is This Test Done?

Your doctor may order this test if you have symptoms like easy bruising, excessive bleeding, or if you’re taking medications that affect blood clotting. It can also help diagnose conditions like liver disease or malabsorption disorders.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for a few hours before the blood draw. Wear a loose shirt for easy access.

How the Test Works

A small needle is inserted into your arm to draw blood. The sample is then sent to a lab for analysis using a specialized method to measure vitamin K levels accurately.

What the Results Mean

Results are compared to standard ranges, but exact values depend on the lab. Low levels may signal vitamin K deficiency, while high levels could indicate liver disease or other conditions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Vitamin K plays a critical role in blood coagulation and bone metabolism. Low levels can lead to excessive bleeding or poor wound healing, while high levels may indicate liver dysfunction or overabsorption from supplements.

Short name

Vitamin K Level

Frequently asked questions

What causes vitamin K levels to be low?
Low vitamin K levels can result from poor absorption (e.g., celiac disease, Crohn’s), certain medications (like antibiotics), liver disease, or malnourishment. Rarely, genetic disorders may also affect production.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on your lab. Follow-up with your doctor if you have questions about your results.
Can I take vitamin K supplements if my levels are low?
Only your doctor can recommend supplements or changes to your diet. They’ll guide you based on your specific needs and medical history to avoid complications.
  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