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CT-Guided Abdominal Drain Catheter Placement with Intravenous Contrast

Published: August 9, 2026Updated: August 16, 2026

A CT-guided procedure used to place a drainage catheter into an abdominal fluid collection, such as an abscess, hematoma, or seroma.

Quick summary

["This imaging-guided procedure drains fluid or pus from the abdomen and can help identify or treat the source of the problem."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
89615-9
Short code
CT Guided Abd Drain+cath plc--W contr IV
Synonyms
CT Guided Abd Drain+cath plc--W contr IV
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
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-guided abdominal drainage is a minimally invasive procedure in which CT images help the clinician safely place a thin drainage catheter into an abnormal fluid collection within the abdomen.

Why might I need this test?

Drainage may be needed to treat an abdominal abscess, infected fluid, blood collection, or another buildup of fluid. It may also be performed when imaging shows that symptoms, such as fever or abdominal pain, could be related to a drainable collection.

How is the test performed?

After numbing the skin, the clinician uses CT guidance and, when indicated, intravenous contrast to identify the collection and guide a needle and catheter into place. Fluid is then drained through the catheter, which may remain in place for continued drainage.

How do I prepare for the test?

Follow the imaging center's instructions about fasting, medications, and sedation. Tell the clinician about iodine contrast allergies, kidney problems, bleeding disorders, pregnancy possibility, and any medicines you take, including blood thinners.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

CT-Guided Abdominal Drainage

Frequently asked questions

Is this procedure painful?
Local anesthetic usually numbs the insertion site, but you may feel pressure or discomfort during needle and catheter placement. Sedation may be offered depending on the situation.
Will the abdominal fluid be tested in the laboratory?
Often, yes. The drained fluid may be examined for infection, blood, cells, or other substances, depending on why the drain was placed.
Does the drainage catheter stay in place?
Sometimes it remains temporarily for ongoing drainage, with the duration based on the collection and your clinical condition. Your care team will provide specific instructions about wound care and when to return.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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