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Peritoneal dialysis solution bags, drain bags, and the supplies patients use daily — dextrose concentrations, icodextrin, sizes, storage, and safety.
Evidence reviewed & updated: 2026-08 — reflects the latest published trials and guidelines.
Dialysis bags are the fluid bags at the heart of peritoneal dialysis: solution bags filled with sterile dialysis fluid (dextrose or icodextrin) that do the filtering, and drain bags that collect the waste fluid. Understanding the types, concentrations, and handling rules is essential for safe home dialysis.
Peritoneal dialysis solution contains electrolytes (sodium, calcium, magnesium, chloride) and an osmotic agent — usually dextrose — that draws water and waste from the blood across the peritoneal membrane. The dextrose concentration determines how much fluid the exchange removes: 1.5% (mild), 2.5% (moderate), 4.25% (strong).
Icodextrin (brand: Extraneal) is a starch-based alternative for the long dwell — typically 7.5% — used when ultrafiltration with dextrose is insufficient (e.g., in fast transporters or patients with high water removal needs). Because it's not absorbed like dextrose, it doesn't add calories — but it CAN falsely elevate some blood glucose meters, a known gotcha.
Standard bag sizes: 1.5-3 liters for CAPD exchanges; cycler (APD) systems use larger bags or bagless systems with a supply line.
Each exchange has two phases: drain (used fluid leaves the body into a drain bag) and fill (fresh solution enters). Drain bags are clear plastic collection bags; patients measure the drained volume to track adequacy — the drained amount should roughly match the filled amount plus the fluid removed.
Transfer sets and Y-sets connect solution bags to the catheter. Modern systems use disconnect 'flush-before-fill' technology that minimizes touch contamination — the leading cause of peritonitis.
Drain bags and tubing are disposed as household waste after each use, following your center's protocol. They are not recycled.
Solution bags must be stored away from sunlight and extreme temperatures (they're damaged by heat). Warming: bags are warmed to body temperature before infusion using a dedicated warmer or approved method — NEVER microwave, and never place in hot water (the dextrose caramelizes and the plastic can leach).
Before every connection: inspect the bag for leaks, cloudiness, or particles; check the expiry date; and check the fluid color (should be clear, colorless to slightly yellow). Cloudy drained fluid = possible peritonitis — call your center immediately.
Supplies are delivered monthly by your dialysis provider, covered by Medicare. Keep a clean, dry storage area and rotate stock by expiry date.
CAPD: 4-5 manual exchanges daily, each using a single 1.5-3 L bag — full control, no machine, but daytime interruptions.
APD (cycler): at night, a machine runs several exchanges automatically from a larger solution supply. Daytime: one long dwell with icodextrin is common. APD offers daytime freedom and is the most prescribed PD modality in many regions.
Either way, the bag system is your lifeline — handling it with sterile technique every single time is what prevents peritonitis.
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This content is a general reference, not medical advice, a diagnosis, or a treatment plan. Do not change your diet, fluids, medicines, or dialysis plan without your nephrologist or renal dietitian. Individual recommendations depend on your labs, medications, conditions, and care plan.