Cholesterol in Hemoglobin (Cholesterol-Hb)
This test measures the amount of cholesterol bound to hemoglobin in red blood cells. It provides insight into how well your body’s cholesterol is distributed across different blood components.
["This test helps assess cholesterol levels tied to red blood cells, which may reflect long-term cholesterol exposure or metabolic health."]
Key facts at a glance
- LOINC
- 4470-1
- Short code
- Choleglobin MFr Bld
- Synonyms
- Choleglobin MFr Bld
- Category
- hematology
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 3 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
Cholesterol-Hb measures the fraction of cholesterol that is attached to hemoglobin within red blood cells. Unlike standard cholesterol tests, which focus on serum or plasma, this test specifically examines cholesterol bound to hemoglobin, which can offer additional context about lipid metabolism over time.
Why It Might Be Ordered
Your healthcare provider may order this test if they suspect conditions affecting red blood cell cholesterol distribution, such as certain metabolic disorders, chronic diseases, or if standard cholesterol tests show inconsistent results. It can also be useful in research or specialized clinical scenarios.
How the Test Works
The test involves analyzing a sample of whole blood, where cholesterol bound to hemoglobin is extracted and measured. The method may use techniques like high-performance liquid chromatography (HPLC) or other advanced analytical tools to quantify this specific cholesterol fraction.
Sample Collection and Preparation
A blood sample is drawn, typically from a vein in your arm. The sample is processed to separate components, including red blood cells, where cholesterol bound to hemoglobin is isolated for measurement. This process ensures accurate detection of cholesterol-Hb levels.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Cholesterol-Hb
Frequently asked questions
Cholesterol-Hb may indicate how cholesterol is distributed within the bloodstream, particularly in red blood cells. Elevated levels could suggest underlying conditions affecting lipid metabolism or red blood cell function, though it is not a standalone diagnostic test for cardiovascular disease or hyperlipidemia. It may complement other cholesterol tests for a more comprehensive assessment.
A high cholesterol-Hb level might suggest abnormal cholesterol distribution or metabolic issues, but it doesn’t directly indicate heart disease risk. A low level could imply reduced cholesterol binding to red blood cells, which may warrant further investigation with your healthcare provider.
No, this test is not a replacement for standard cholesterol tests. It provides additional information about cholesterol in red blood cells and may be used alongside other tests for a more detailed evaluation of lipid health.
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