CT Pulmonary Vessel Angiography with Contrast (Deprecated)
A CT scan uses X-rays and intravenous contrast to examine the blood vessels in the lungs, commonly to evaluate for a pulmonary embolism.
["This test helps doctors assess blood flow through the pulmonary arteries and look for blocked vessels."]
Key facts at a glance
- LOINC
- 69108-9
- Short code
- Deprecated Pulm ves CT.Angio WO+W contr
- Synonyms
- Deprecated Pulm ves CT.Angio WO+W contr
- Category
- liver
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ct-angio
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What is this test?
CT pulmonary angiography is an imaging test that creates detailed pictures of the blood vessels supplying the lungs. Intravenous contrast is used to make the pulmonary arteries easier to see. The associated LOINC entry is deprecated, which may mean the test has been replaced by a newer imaging code or description.
Why might I need this test?
The test is most often used to look for a pulmonary embolism, a blood clot that has traveled to a lung artery. It may also be used to evaluate other abnormalities of the pulmonary blood vessels when symptoms or other test findings suggest a problem.
How is the test performed?
An intravenous line is placed in a vein, and a contrast material is injected into the bloodstream. The CT scanner then takes a series of X-ray images while you lie on a table, usually holding your breath briefly for some images. The scan generally takes a relatively short time.
How do I prepare for the test?
Follow the imaging center's instructions and tell the staff about any prior contrast reactions, kidney disease, severe allergies, or possible pregnancy. You may need a blood test to check kidney function before receiving contrast and may be asked not to eat or drink for a short period beforehand.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
A pulmonary embolism may appear as a blockage or filling defect in a pulmonary artery. Other findings can suggest conditions affecting the pulmonary vessels, but CT images must be interpreted together with symptoms, examination findings, and other tests.
Short name
CT Pulmonary Angiography with Contrast
Frequently asked questions
Is this the same as a routine chest CT?
Why does the test name say deprecated?
What should I do if I am pregnant or have reacted to contrast before?
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