Oxygenated Hemoglobin in Blood (Pre-Bled Sample)
This test measures the amount of oxygen-bound hemoglobin in your blood, taken before a blood draw. It helps assess how well oxygen is being carried and utilized by your red blood cells.
["Helps evaluate oxygen transport efficiency in your bloodstream."]
Key facts at a glance
- LOINC
- 19967-9
- Short code
- OxyHgb pre BD % BldA
- Synonyms
- OxyHgb pre BD % BldA
- 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 This Test Measures
Oxygenated hemoglobin (oxyHb) is the form of hemoglobin that carries oxygen from your lungs to tissues throughout your body. This test specifically measures the concentration of oxyHb in your blood, which can be influenced by factors like oxygen availability, red blood cell health, and overall circulation.
Why It Might Be Ordered
Your healthcare provider may order this test if you have symptoms like fatigue, shortness of breath, or cyanosis (bluish skin), or if conditions like anemia, lung disease, or heart problems are suspected. It can also be part of routine monitoring for patients with chronic diseases affecting oxygen transport.
Sample Collection and Preparation
A blood sample is drawn from a vein, typically in your arm. The test uses a portion of this blood (either serum or plasma) to measure oxyHb levels. The sample is processed and analyzed in a laboratory using specialized techniques to determine the precise concentration of oxygen-bound hemoglobin.
What to Expect Before the Test
No special preparation is usually needed, but you may be asked to fast for a few hours if your test involves a specific type of blood draw. Avoid smoking or consuming caffeine for 30 minutes before the test, as these can affect oxygen levels temporarily.
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
OxyHb (Serum/Plasma)
Frequently asked questions
How is this test different from a regular hemoglobin test?
Can diet or lifestyle affect my oxyHb levels?
What if my oxyHb levels are outside the normal range?
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