Hemoglobin mass concentration in whole blood
This test measures the total amount of hemoglobin (the oxygen-carrying protein in red blood cells) in your blood, not just the percentage or amount of hemoglobin present.
["Helps assess red blood cell health and overall blood oxygen-carrying capacity."]
Key facts at a glance
- LOINC
- 40719-7
- Short code
- Hgb BldCo-mCnc
- Synonyms
- Hgb BldCo-mCnc
- Category
- hematology
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- 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
- 3 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
What Is Hemoglobin Mass Used For?
Hemoglobin mass testing is primarily used to diagnose and monitor conditions affecting red blood cells, such as anemia (low red blood cell count) or polycythemia (high red blood cell count). It can also help evaluate iron deficiency or other blood disorders where red blood cell production or function is impaired.
How Is This Test Performed?
A small blood sample is drawn from a vein, typically in your arm. The sample is then analyzed using a specialized technique to measure the precise amount of hemoglobin in your blood.
Why Might You Need This Test?
Your healthcare provider may order this test if you have symptoms like fatigue, pale skin, shortness of breath, or if they suspect conditions like anemia, thalassemia, or other blood-related disorders.
What Do the Results Mean?
Results are compared to standard ranges for your age, sex, and overall health. Abnormal results may indicate whether you have too little or too much hemoglobin, guiding further medical evaluation.
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.
Clinical Significance: Hemoglobin mass is a critical indicator of red blood cell health and overall blood health. Low levels can signal anemia or iron deficiency, while high levels may suggest conditions like polycythemia or dehydration. It provides a more precise measurement than traditional hemoglobin percentage tests, helping doctors diagnose and manage blood disorders more accurately.
Short name
Hemoglobin Mass
Frequently asked questions
Why is hemoglobin mass testing different from regular hemoglobin tests?
How often should I get this test?
Can I prepare for 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