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Getting Fluid Samples From Your PD bag

  • Español PDF

This handout explains how to get several types of fluid samples from the peritoneal dialysis (PD) catheter, the drain line, and the drain bag. Sometimes a sterile sample is needed and sometimes it does not have to be sterile.

QR CodeView a video of these instructions:
Getting a Peritoneal Dialysis Fluid Sample from the Drain Bag
youtube.com/watch?v=YR4Pib7Ncfo

 

How to get a fluid sample from the PD catheter for a sterile culture

This is to check for germs or possible infection.

Supplies:

  • Masks
  • Blue pad (Chux)
  • Alcavis
  • Sterile 4x4 gauze – 4 packs
  • Effluent bag
  • Minicap caps (2)
  • Hand sanitizer

Follow these steps:

  1. Wash your hands and gather supplies.
  2. Put on a mask and gel your hands.
  3. Have everyone in the room mask up.
  4. Ensure doors and windows are closed and fans are off.
  5. Access the PD catheter (remove it from the belt).
  6. Open two packages of 4 x 4 gauze but do not touch the gauze yet.
  7. Pour or spray Alcavis onto both gauze.
  8. Open Minicap to have it ready.
  9. Place blue pad under catheter.
  10. Gel hands and put on gloves.
  11. Pick up one saturated gauze. Scrub the end of the transfer set with Alcavis soaked gauze for 1 minute and then use the other Alcavis soaked gauze and wrap the catheter end for 1 minute.
  12. Do hand hygiene and put on new gloves.
  13. Hold the transfer set and remove the Minicap.
  14. Attach the effluent sample bag to the PD catheter and open the twist clamp. Be careful not to contaminate.
  15. Allow at least 50 mL to drain into the bag or at least until the bag gets half filled.
  16. Close the twist clamp on the transfer set and close the clamp on the effluent bag.
  17. Do hand hygiene and put on new gloves.
  18. Open 2 new packages of gauze.
  19. Pour or spray Alcavis on both pieces of gauze. Scrub PD catheter for 1 minute with one saturated gauze. Take the other saturated gauze and wrap the catheter end for 1 minute.
  20. Do hand hygiene and put on new gloves.
  21. Disconnect the effluent bag, put a new Minicap on the effluent bag.
  22. Place the new Minicap on the end of the transfer set.
  23. Write your child’s name on the effluent bag label and take it to the designated lab.

How to get a fluid sample from the Y sample port line for a sterile culture

This is to check for germs or possible infection.

Supplies:

  • Gloves
  • Masks
  • Sterile specimen cup

Follow these steps:

To get a fluid sample your child must be in initial drain, the fluid appears to be cloudy during the initial drain, and your child must have had a dwell of at least 2 hours before going to the drain part of the cycle.

  1. Once in the drain, press “STOP.”
  2. Gather supplies.
  3. Put on a mask.
  4. Wash or gel your hands.
  5. Put on gloves.
  6. Open a sterile specimen cup and set the lid down with the inside facing up.
  7. Grab the pigtail port on the drain line.
  8. Fold the drain line below the pigtail port into the palm of your hand.
  9. Remove the cap on the pigtail port.
  10. Hold the port over the top of the specimen cup without touching it to the inside of the cup.
  11. With your other hand, press “GO” on the cycler.
  12. Let the fluid drain into the cup, pulsate once.
  13. Press “STOP,” clamp the drain line pigtail port and let go of the drain line.
  14. Press “GO” to resume therapy.
  15. Put the lid on top of the specimen cup.
  16. Write your child’s name on the label and take it to the designated lab.

How to get a fluid sample from the drain bag for a non-sterile culture

This is to check for adequacy (how well your child is dialyzing) and to see if the PD prescription is providing enough clearance for fluids and urea.

Supplies:

  • Sterile specimen cups (1 for each drain bag plus 1 extra)
  • Gloves
  • Drain bag(s) from dialysis

Follow these steps:

  1. Gather supplies. Collect sample at the end of dialysis cycle.
  2. Remove the lid from the specimen cup to have it ready.
  3. Put on gloves.
  4. Agitate the solution in the drain bag.
  5. Open the access/drain port clamp (the larger clamp) and drain into the specimen cup until the cup is about ½ full, then re-clamp.
  6. Place the lid on specimen cup and tighten securely.
  7. Bring the specimen cup to your child’s clinic visit and give to your nurse. If submitting to your local lab, please label specimen cup.

If you have 2 drain bags:
You will need 3 specimen cups. 1 specimen cup for each drain bag and a 3rd cup to combine the samples from each of the drain bags. The 3rd cup should be filled half full of equal parts from each drain bag.

To Learn More

  • Dialysis
    206-987-3985
  • After hours, weekends and holidays call the hospital at 206-987-2000 and ask for the nephrologist on call.
  • Ask your child’s healthcare provider
  • seattlechildrens.org/patient-education

Free Interpreter Services

  • In the hospital, ask your nurse.
  • From outside the hospital, call the toll-free Family Interpreting Line, 1-866-583-1527. Tell the interpreter the name or extension you need.
Seattle Children's Hospital

Seattle Children’s offers free interpreter services for patients, family members and legal representatives who are deaf or hard of hearing or speak a language other than English. Seattle Children’s will make this information available in alternate formats upon request. Call the Family Resource Center at 206-987-2201. This handout has been reviewed by clinical staff at Seattle Children’s. However, your needs are unique. Before you act or rely upon this information, please talk with your healthcare provider.

© 2026 Seattle Children’s, Seattle, Washington. All rights reserved.

07/01/2024
PE1567
Patient and Family Education | Dialysis

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