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Phospholipid Profile (Lecithin-to-Cholesterol Ratio or Phospholipid Mass Concentration)

Published: August 9, 2026Updated: August 17, 2026

This test measures the concentration of phospholipids in your blood, which are essential components of cell membranes. It may be used to assess lipid metabolism or detect certain lipid disorders.

Quick summary

["Understanding your phospholipid levels can help identify potential lipid-related health concerns."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
2556-9
Short code
Lecithin Phosphorus Amn-mCnc
Synonyms
Lecithin Phosphorus Amn-mCnc
Category
chemistry
Sample
fluid
Container
Sterile tube
Units
N/A
Ref low
2.5
Ref high
4.5
Critical range
1 N/A – —
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
84100
Specimen volume
2-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
Hemolysis max
300
TAT
4–24 hours
Order
routine

What This Test Measures

Phospholipids are a group of lipids that include lecithin and other molecules critical for cell structure and function. This test typically evaluates the mass concentration of these compounds in your blood, often as part of broader lipid or metabolic assessments.

Why It Might Be Ordered

Your healthcare provider may request this test if you have symptoms or risk factors for lipid disorders, such as high cholesterol, or if you’re undergoing evaluation for conditions like atherosclerosis, liver disease, or metabolic syndrome.

Sample Collection and Preparation

A blood sample is drawn from a vein, usually in your arm. The sample is processed to separate serum or plasma for analysis. This test does not require fasting unless specified by your provider.

Common Uses and Clinical Context

Phospholipid analysis may be used to monitor lipid metabolism, evaluate genetic disorders affecting lipid synthesis, or assess the effectiveness of treatments targeting lipid disorders.

Reference range

Adult: 2.5-4.5 mg/dLN/A

Specimen: fluid

No special preparation usually required. Stay well hydrated. Inform your healthcare provider of all medications and supplements you are taking.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Phospholipid Analysis

Frequently asked questions

Why do I need this test?
Your doctor may recommend this test to check for conditions related to lipid metabolism, such as inherited disorders or metabolic syndrome, or to monitor treatment responses for lipid-related health concerns.
What does a normal result mean?
A normal result does not guarantee absence of underlying issues but indicates typical phospholipid levels for your age and health status. Follow-up testing or additional evaluations may be needed if your results are outside expected ranges.
How long will it take to get my results?
Results are typically available within 1 to 3 business days, depending on lab processing times and your healthcare provider’s workflow. Your doctor will discuss the results with you during your follow-up visit.
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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 17, 2026. · Read our editorial policy