Hemoglobin Mass Concentration in Whole Blood
This test measures the total amount of hemoglobin (the protein in red blood cells that carries oxygen) in your blood.
["Helps assess red blood cell function and potential anemia."]
Key facts at a glance
- LOINC
- 722-9
- Short code
- Hgb Plr-mCnc
- Synonyms
- Hgb Plr-mCnc
- Category
- hematology
- Sample
- fluid
- Container
- Sterile tube
- Units
- N/A
- Ref low
- 12
- Ref high
- 17.5
- Critical range
- 7 N/A – 20 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 85018
- SNOMED
- 900000000000003004
- Specimen volume
- 2-5 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h
- Hemolysis max
- 300
- TAT
- 4–24 hours
- Order
- routine
What Is Hemoglobin?
Hemoglobin is the molecule in red blood cells responsible for transporting oxygen from your lungs to the rest of your body. It also carries carbon dioxide away from tissues back to the lungs. Hemoglobin levels can give important clues about whether your red blood cells are healthy or if there may be a blood disorder.
Why Might This Test Be Ordered?
Your healthcare provider may order this test to evaluate symptoms like fatigue, pale skin, shortness of breath, or unusual weakness. It can also be part of routine blood work, monitoring for conditions like anemia, blood loss, or certain genetic disorders.
How Is the Test Performed?
A small sample of your blood is drawn from a vein, usually in your arm. The blood is then analyzed in a lab to measure the total hemoglobin mass concentration.
What Does a Low or High Hemoglobin Level Mean?
Hemoglobin levels can vary based on factors like age, sex, and overall health. Low levels may suggest anemia or blood loss, while very high levels could indicate conditions like polycythemia (too many red blood cells). Your results will be compared to your specific health profile and symptoms.
Reference range
Adult males: 13.5-17.5 g/dL; Females: 12.0-16.0 g/dLN/A
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
Hemoglobin Mass
Frequently asked questions
How does this test help diagnose or monitor conditions?
What are the typical reference ranges for this test?
Can this test be done at home?
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