Skip to content

Drainage Catheter for Abscess

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

This guide helps you understand what a drainage catheter for an abscess is, why your doctor placed it, and how to monitor and care for it at home, including warning signs to watch for and what to expect during follow-up.

Quick summary

{"A drainage catheter is a thin tube that helps drain fluid/pus from an abscess","Keep the catheter site clean and dry to prevent infection","Contact your doctor if you notice increased pain, swelling, or fever","Do not remove the catheter yourself - only a healthcare professional should do this","Follow all care instructions provided by your healthcare team"}

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

Key facts at a glance

LOINC
87017-0
Short code
ABS-CATH-CHK
Synonyms
Guided Unsp region Absc drain cath check
Category
cardiac
Sample
serum
Container
Not applicable - No specimen collection required
Units
N/A
Ref low
3.5
Ref high
5
Critical range
2.5 N/A – 6.5 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
imaging-modality
CPT
49405
SNOMED
265764009
Specimen volume
Not applicable - No specimen collection required
Stability
Not applicable - No specimen collection required
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is a Drainage Catheter for Abscess?

An abscess is a painful collection of pus that forms in tissues of the body. A drainage catheter is a thin, flexible tube that doctors insert into the abscess to help drain the fluid and promote healing. This procedure is typically done under imaging guidance (like ultrasound or CT scan) to ensure proper placement.

Why is This Catheter Needed?

The catheter helps remove infectious material from your body, reduces pressure and pain, allows the abscess to heal from the inside out, and prevents the infection from spreading. It also helps healthcare providers monitor the amount and type of fluid being drained.

How to Care for Your Drainage Catheter

Your healthcare team will provide specific instructions, but general care guidelines include: keep the insertion site clean and dry, wash your hands before touching the catheter or site, do not pull or tug on the catheter, keep the drainage bag below the level of the abscess, and change dressings as instructed by your healthcare provider.

Warning Signs to Watch For

Contact your healthcare provider immediately if you experience: fever (temperature over 100.4°F or 38°C), increased pain or redness around the catheter site, swelling or warmth at the site, foul-smelling or unusual drainage, leakage around the catheter, or if the catheter becomes dislodged or broken.

Follow-up Care

You will have follow-up appointments to monitor your healing and determine when the catheter can be safely removed. The duration of catheter placement varies depending on the size and location of the abscess. Imaging tests may be repeated to confirm the abscess has resolved before removing the catheter.

Reference range

Adult: 3.5-5.0 mmol/LN/A

Specimen: serum

Patient should report any signs of infection, increased pain, catheter displacement, or decreased drainage. Keep catheter site clean and dry. Do not manipulate catheter unless instructed by healthcare provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

How long will I need to keep the catheter?
The duration varies depending on the size and location of your abscess. It may range from a few days to several weeks. Your doctor will determine when drainage is complete based on clinical examination and imaging studies.
Can I shower with the drainage catheter?
This depends on your specific situation. Some patients may be allowed to shower with waterproof dressings, while others should avoid getting the site wet. Always follow the specific instructions given by your healthcare provider.
Is it normal to have some drainage from the catheter?
Yes, some drainage is expected and actually desired - it means the abscess is being drained. However, report any sudden increase in drainage, change in color (especially to green or bloody), or foul odor to your doctor.
What should I do if the catheter falls out?
Do not attempt to reinsert it yourself. Contact your healthcare provider immediately or go to the emergency department. The site may need to be assessed and the catheter may need to be repositioned or replaced.
Will I need antibiotics along with the drainage?
Most patients will receive antibiotics to treat the underlying infection. It's important to take all prescribed antibiotics as directed, even if you start feeling better.
  1. 1
    Radiological Society of North America - Abscess DrainageSource
  2. 2
    UpToDate - Percutaneous drainage of abscessesSource

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