Chest X-ray with Abdomen (Supine Position) – Abdominal Plain Radiograph (AP)
This test involves taking an X-ray image of your chest and abdomen while you lie on your back. It helps doctors examine your organs, bones, and tissues for any abnormalities.
["An abdominal X-ray can detect issues like blockages, infections, or structural problems in your digestive system and organs."]
Key facts at a glance
- LOINC
- 43786-3
- Short code
- Deprecated Abd+Chest XR AP(supKUB+Upr)+P
- Synonyms
- Deprecated Abd+Chest XR AP(supKUB+Upr)+P
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- xr
- 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 This Test Measures
An abdominal X-ray captures images of your internal structures, including your intestines, kidneys, spine, and abdominal organs. It uses low-dose radiation to create detailed pictures that can show differences in tissue density. This helps identify potential problems such as blockages, foreign objects, or unusual growths.
Common Uses and Indications
Doctors may order this test to investigate symptoms like unexplained abdominal pain, signs of bowel obstruction, suspected kidney stones, or other gastrointestinal concerns. It’s also used before surgeries or procedures to assess your anatomy.
How the Test Is Performed
You’ll lie on an X-ray table while the technician positions your body to get clear images of your chest and abdomen. A special plate or film captures the images. You may need to hold your breath briefly during the exposure. No special preparation is usually required, but fasting may be advised if further testing (like a contrast study) is planned.
Preparation and Safety
No special preparation is typically needed, but you should inform your doctor about any allergies, pregnancy, or recent surgeries. If you’re pregnant, you’ll be asked to avoid this test unless absolutely necessary due to radiation exposure risks.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Frequently asked questions
Why might this test be important?
How long will I need to wait for results?
Can I eat or drink before 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