Bumrungrad International Hospital
Standard Dialysis or HDF: Which to Choose
Every Thai unit offers standard hemodialysis. Some private hospitals also offer online hemodiafiltration, or HDF, for a modest premium per session. It is worth deciding between them before you book.
Standard hemodialysis cleans the blood by diffusion – waste passes across a membrane into the dialysis fluid. HDF adds convection, pushing fluid across the membrane as well. That extra step also removes mid-sized waste molecules that diffusion leaves behind. In practice, patients on HDF tend to hold their blood pressure better during a session and correct anemia more easily.
In Thailand, HDF runs on the Fresenius 5008 system at Bangkok Hospital Phuket and Bangkok Hospital Siriroj.
| Standard hemodialysis | Online HDF | |
|---|---|---|
| How it cleans the blood | Diffusion | Diffusion plus convection |
| Waste removed | Small molecules | Small and mid-sized molecules |
| Main benefit | The established standard of care | Steadier blood pressure, easier anemia control |
| Availability in Thailand | Every dialysis unit | Selected private hospitals |
| Added to the session price | – | about 1,000 THB, or $30 |
Ask the unit whether HDF is available on your session days before you book.
How to Choose a Dialysis Unit Abroad
Travel dialysis is routine, and the research is specific about what makes it safe. A study in the Journal of Travel Medicine followed 172 hemodialysis patients across 200 trips. The added risk it measured was not spread evenly across the group. It concentrated in patients who dialyse through a central venous catheter, a tube placed in a large vein. In that group, bloodstream infections roughly tripled after travel. The rate rose from 0.25 to 0.83 per 1,000 days of catheter use. More patients also needed antibiotics after the trip, usually for chest or urinary infections. No one in the study caught hepatitis B or C.
So the deciding factor is not whether you travel. It is which unit you dialyse in. Three questions tell you most of what you need:
- Do you disinfect the catheter hub before every single connection, the way the CDC dialysis-safety guidance describes?
- Do you use a fresh, single-use filter for every patient?
- Is a kidney specialist on call around the clock if the access site becomes infected?
A unit that answers all three without hedging is a unit you can plan around.
Water Safety: How Clean the Dialysis Water Has to Be
A hemodialysis patient meets 300–600 litres of water a week through the dialysis fluid. That volume makes water purification the most important safety system in the unit. Bacteria or chemical traces that slip through can cause fever reactions, bloodstream infections, or a build-up of contaminants over years.
Thai centres accredited by Joint Commission International run a multi-stage reverse osmosis loop built for the dialysis unit alone. It is not shared with the rest of the hospital plumbing. Bumrungrad International Hospital and Bangkok Hospital Siriroj both publish the same commitment. Their loops meet the dialysis-water standards of the Association for the Advancement of Medical Instrumentation.
Three questions to send a coordinator before you book:
- Is the reverse osmosis loop dedicated to the dialysis unit?
- Is it AAMI-compliant, and can you send the latest test certificate?
- How often do you culture the water and test it for endotoxins?
A unit that answers these directly treats water safety as clinical work, not as a marketing line.
How Thai Units Prevent Hepatitis and HIV Transmission
Accredited Thai dialysis units follow the same infection playbook as units in the US, UK, or Australia. Before you start treatment, your hepatitis B, hepatitis C, and HIV test results must be less than 30 days old.
If you test positive for the hepatitis B surface antigen, you dialyse in a separate room on a dedicated machine. That is the standard the CDC sets for hemodialysis units, and accredited Thai centres apply it. If your hepatitis B antibody level is below 10 IU/L, you are not protected. Start the vaccination course at home, before you travel, not on arrival.
Bumrungrad International Hospital runs 22 dialysis stations plus two isolation rooms, and holds both JCI accreditation and DNV infection-risk certification. Intrarat Hospital runs its hemodialysis centre under an ISO 9001:2015 quality system.
Flying Safely on Dialysis: The Next-Day Rule
Long-haul flights put pressure on kidneys that a healthy passenger never notices. The CDC Yellow Book puts cabin pressure at the equivalent of 6,000–8,000 ft of altitude. Cabin air is dry too, usually 10–20% humidity. That combination speeds up dehydration, thickens the blood, and strains your vascular access. For dialysis patients it is not a nuisance; it is a scheduling constraint.
The clinical rule is simple: never fly on the same day as a dialysis session. Post-session fatigue and fluid shifts are dangerous at altitude, so plan the flight for the day after a session. Standard hemodialysis means three sessions of about four hours every week, and that rhythm does not tolerate long gaps. Keep no more than two to three days between your last session at home and your first one in Thailand.
Carry your dialysis records, current dry-weight targets, and prescriptions in your hand luggage. Ask your home renal team to co-sign the itinerary.
Plan the arrival day itself as a rest day. Book the first Thai session for the day after you land, not the same evening. Ask the unit in advance who to contact if the flight is delayed. Large international hospitals in Bangkok run 24-hour international patient desks that can move a booked slot. Confirm that before you fly.
Staying Longer Than 60 Days: Thai Visa Routes
Most Western nationals can enter Thailand without a visa for 30–60 days. A longer stay needs paperwork, and there are two routes. Both are applied for through Thailand's official e-Visa portal, run by the Ministry of Foreign Affairs.
- The Non-Immigrant O visa for medical treatment covers stays of up to 90 days. It needs an invitation letter on hospital letterhead, signed by a clinical director, naming your diagnosis and treatment plan.
- The one-year medical treatment visa covers up to 12 months, plus up to three immediate family members as attendants.
The one-year route carries strict financial thresholds. Thai law firm Kudun and Partners lists them as follows:
- A bank balance of at least 800,000 THB, about $23,500, held individually rather than pooled across the family.
- Health insurance covering the whole stay, with at least 3,000,000 THB, about $100,000, of medical cover.
- A passport valid for at least six months from entry.
- A hospital invitation letter obtained at least 30 days before travel.
Some Bangkok hospitals, Bumrungrad among them, run a visa extension counter on site. If the treatment plan changes mid-stay, the renewal paperwork stays inside the hospital instead of adding an immigration-office trip.