What Is a — PICC Line?
A PICC line is a thin tube that enters a vein in your arm and threads through to deliver chemotherapy close to your heart. It is placed in an outpatient room without surgery, stays in your arm for as long as your treatment needs it, and comes out when you are done.
Medically reviewed by Dr. C. Raghavendra Reddy, Medical Oncologist, MBBS (Gold Medal) · DNB · DM (Medical Oncology, Gold Medal) · Last reviewed September 2026
- Starts in your arm — The tube enters a vein in your upper arm, not your chest. No surgical implant is needed.
- Ends near your heart — The tip sits in a large vein just above the heart, where fast blood flow dilutes chemotherapy and protects your smaller arm veins.
- Stays for weeks to months — It remains in place throughout your course of treatment and is removed when chemotherapy ends.
- Needs regular care — The dressing and line need attention each week. Your nurse will show you what is involved before you leave.
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A PICC line is a long, thin tube inserted into a vein in your upper arm. It threads upward through the vein to sit just above your heart, where blood flow is fast enough to dilute chemotherapy safely. It can stay in place for weeks to months and is removed when your treatment ends.
How is a PICC line put in?
Ultrasound to find the vein
A nurse or doctor uses an ultrasound probe on your upper arm to find a suitable vein. Your arm is measured so the correct tube length can be selected.
Cleaning and numbing
The skin is cleaned and a small injection of local anaesthetic numbs the area. Most people feel mild pressure but not sharp pain during the procedure.
The tube is threaded in
A thin, flexible tube is guided into the vein and advanced upward through your arm toward your chest. You may feel some pressure as it moves.
X-ray to confirm position
A chest X-ray confirms the tip is sitting correctly in the large vein just above the heart. The line is not used until this is confirmed.
Dressing applied
The tube is secured with a dressing at the entry point on your arm. Your nurse will show you what the site looks like before you leave.
Ready the same day
In most cases the line is ready to use immediately, and your first infusion can begin.
Where in your body does a PICC line go?
A PICC line starts in a vein in your upper arm — usually the inner arm — and ends in a large vein just above the heart called the superior vena cava. PICC stands for peripherally inserted central catheter: peripheral because it enters at the arm, central because it ends at the chest.
The tip position matters because blood flow in that large vein is very fast. Chemotherapy drugs dilute quickly there, which protects the smaller veins in your arm from irritation and damage that can build up over many infusions.
A PICC line is different from a port. A port is a device implanted under the skin on your chest, hidden completely once healed. A PICC line sits in your arm and is visible as a dressing and a short length of external tubing. It does not need a surgical implant and is generally less expensive than a port, but it is more noticeable in daily life and needs more regular care.
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How long does a PICC line stay in, and what care does it need?
A PICC line can stay in place for weeks to months, depending on the length of your chemotherapy. It is removed once treatment finishes, or earlier if a problem such as infection or blockage develops.
The dressing over the entry site needs to be changed by a trained nurse, typically once a week or whenever it becomes wet or loose. The line is also flushed regularly to keep it clear and prevent blockage. Your nurse will explain the routine and show you what normal looks like so you can notice any change.
You can go home with the PICC line in and manage most daily activities. Heavy lifting with that arm is usually not advised, and you will need to protect the site from water when bathing. Your team will give you specific guidance — confirm those instructions before you leave the clinic.
What signs of infection should you watch for?
Redness, swelling, warmth or tenderness around the entry site on your arm are early signs that something is wrong. Do not wait for your next scheduled appointment if you notice any of these — call your team the same day.
Fever or chills with a PICC line in place always needs a same-day call, even when your arm looks normal. An infection in the line can reach the bloodstream quickly and become serious.
Pus or discharge from the site, pain when the line is being flushed, or new swelling along your arm are also reasons to contact your team today rather than waiting to see whether it settles.
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- Extravasation: When Chemotherapy Leaks From the Vein
- Looking After Your Port Between Cycles
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- Port Infection: Signs and What to Do
- Port Insertion: What the Procedure Involves
- Port vs PICC Line: Which Is Better?
- What Is a Chemotherapy Port?
- What Is a PICC Line?
- What to Report Immediately During an Infusion
- When and How Is a Port Removed?
Before You Start: Tests & Preparation
HUB — Before You Start Chemotherapy
Pharmacogenomic & Pre-Treatment Safety Testing
- DPYD Testing Before 5-FU and Capecitabine
- Heart, Kidney and Hearing Tests Before Chemotherapy
- Safety Tests Before Your First Chemotherapy Dose
- Should You Ask for Pharmacogenomic Testing?
- TPMT and NUDT15 Testing Before Thiopurines
- UGT1A1 Testing Before Irinotecan
- What If a Safety Test Comes Back Abnormal?
- What Is DPD Deficiency?
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Frequently asked questions
Is a PICC line the same as a port?
No, they are different devices. A port is a small disc implanted under the skin on your chest through a surgical procedure. It is invisible once healed and accessed through a needle each visit. A PICC line is a tube that enters a vein in your arm and is visible as a dressing and a short length of external tubing. A PICC line is placed and removed without surgery and is generally less expensive, but it needs more regular care and is more noticeable in daily life. Your team recommends one over the other based on your veins, your drugs, and how long treatment runs.
Does it hurt to have a PICC line put in?
The skin is numbed with local anaesthetic before the tube is inserted, so the procedure itself is usually not painful. Most people describe feeling pressure as the tube threads through the vein. Some discomfort and mild bruising in the arm afterward is common and settles within a short time. If you have significant pain, swelling or redness in the days after insertion, tell your team — those are worth checking rather than waiting.
Can I shower or bathe with a PICC line?
The entry site and dressing must stay dry. Getting the site wet increases the risk of infection and can loosen the dressing, which then needs to be changed by a nurse. Most people cover the arm with a waterproof sleeve when showering. Submerging the arm — in a bath, swimming pool or the sea — is generally not advised while the line is in place. Ask your nurse about the specific cover recommended for your dressing type before you go home.
Can I use my arm normally with a PICC line?
Most everyday activities are fine — eating, dressing, walking and light tasks. Heavy lifting, vigorous exercise with that arm, and activities that put strong repeated pressure on the arm are generally not advised because they can dislodge or damage the line. Most people find the restriction manageable once they get used to the line over the first few days. Your team will tell you what applies to your specific situation.
What happens if the PICC line gets blocked?
A blocked line cannot be flushed or used for infusions. Your nurse will try to clear it using a gentle technique. If that does not work, the line may need to be replaced. Regular flushing by your nurse is the main way to prevent blockages. If the line feels resistant during a flush, or fluid does not flow as expected, tell your team before the next infusion rather than waiting to see if it resolves on its own.
Can chemotherapy always be given through a normal drip instead?
Some chemotherapy can be given through a short cannula placed in a vein in your hand or forearm for a single session. Whether that is suitable depends on how irritating the specific drugs are to vein walls, how long each infusion takes, and how many cycles you need. Some drugs can only be given safely through a central line like a PICC because they would damage a smaller vein. Your oncologist and nursing team will explain which applies to your treatment and why a PICC line is being recommended if that is the case.
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