Blood tests read on the island, Koh Phi Phi
On an island with no hospital, “come back tomorrow for your results” is not a minor inconvenience — it is a ferry, or a day of waiting while something either settles or gets worse. Blood tests in Koh Phi Phi are run here with results in the same visit for the ones that matter urgently, at any hour, which is the whole point of having a laboratory on this side of the water.
What we can run, and how fast
Same visit, in roughly fifteen to thirty minutes: dengue NS1 antigen and antibodies, malaria, full blood count, blood glucose, and pregnancy testing.
Within a few hours to a day: liver function, kidney function, electrolytes, inflammatory markers such as CRP, thyroid function, and cholesterol.
Sent to the mainland for specialist analysis: hormone panels, autoimmune screens, cultures and anything unusual. Those take longer and we will tell you honestly how long rather than guessing optimistically, because a promise of “a couple of days” that turns into a week is worse than an accurate estimate.
Why the full blood count matters more here
It is the single most useful test in a tropical clinic, and it is both fast and cheap.
White cells indicate whether an infection is likely bacterial or viral, which decides whether antibiotics help or merely cause side effects. Platelets are the number that matters in dengue — a falling platelet count is what turns an unpleasant fever into something needing hospital admission, and you cannot see it by looking at somebody.
Haemoglobin picks up anaemia and blood loss. Together those three numbers reframe a great many consultations, and they are available before you have finished a glass of water.
Fever in the tropics is a test, not a guess
Any fever over 38C lasting more than a day or two here deserves a blood test rather than a paracetamol and optimism.
The reason is that the possibilities look identical at the start. Dengue, a bacterial infection, a urinary tract infection and early cellulitis all begin as “I feel awful and I have a temperature”, and they need completely different treatment.
Getting dengue wrong has a specific hazard: ibuprofen and aspirin thin the blood and are actively dangerous in dengue, where platelets are already falling. Anybody treating what they assume is flu with ibuprofen is doing precisely the wrong thing, and a fifteen-minute test prevents it.
Tests for diving, and for a long stay
Divers occasionally need bloods for medical clearance, and we can do both together — see dive medical and medical certificates.
People working a season here often want a baseline: liver and kidney function, cholesterol, blood sugar and thyroid. It is a sensible thing to have on record if you are living two hours from a hospital, and it occasionally turns up something worth knowing about early rather than late.
Anybody on long-term medication requiring monitoring — thyroid replacement, some blood pressure drugs, anything affecting the kidneys — can have that monitoring done here rather than interrupting a trip to fly home for it — see prescription refill.
How the visit works
Walk in at either branch, at any hour. No appointment, no referral, and no need to have been told to come by anybody.
Most tests do not need fasting. Cholesterol and fasting glucose do, which means eight to twelve hours without food — water is fine and encouraged. If you turn up unfasted for those we will tell you rather than running them and producing a number that means nothing.
The draw takes a couple of minutes from a vein in the arm. Tell us if you have ever fainted having blood taken; it is common and entirely manageable if we know beforehand and lie you down, rather than after you are on the floor.
Come hydrated if you can. Heat, sweating and a heavy night all make veins harder to find, and a dehydrated arm turns a two-minute job into an uncomfortable one with more than one attempt.
Getting the results, and taking them with you
Rapid results are given to you in the room. Others come by message or a call, or you come back in, whichever you prefer.
You leave with a printed English report showing the values, the reference ranges and what they mean. That matters for two reasons: your insurer will want it, and any doctor you see afterwards — on the mainland, at home, or on the next stop of your trip — can read it without needing a translation.
If anything is abnormal you will be told what it means and what to do about it, rather than handed a sheet of numbers and left to search for them. Where something needs following up beyond what the island can offer, that is arranged rather than mentioned.
What happens when a result is bad
Occasionally a result changes the plan entirely — platelets low enough that dengue needs monitoring in hospital, an infection marker high enough that oral antibiotics will not be sufficient, kidney function poor enough that the IV fluids we were about to give need rethinking.
In those cases the useful thing is that we already know before you leave. We stabilise, call ahead to the receiving hospital so they are expecting you, and arrange the boat — see evacuation and hospital transfer.
The alternative, on an island, is finding out two days later. That is precisely the gap this laboratory exists to close, and it is why the machines run at night as well as during the day.
The normal result, which is most of them
It is worth saying plainly that the majority of tests we run come back entirely normal, and that this is not a wasted visit.
Being able to tell somebody at two in the morning that their platelets are fine and this is an ordinary virus is worth as much as catching the bad result. People sleep, they stop cancelling their plans, and they stop reading about dengue on their phones at three in the morning.
On a short trip, a normal result also buys back time. A day spent worrying is a day of a holiday, and fifteen minutes and a small fee is a good trade against it.
Frequently asked questions
How long do results take?
Dengue, malaria, full blood count, glucose and pregnancy tests come back in about fifteen to thirty minutes. Liver, kidney and thyroid panels take a few hours to a day.
Do I need to fast?
Not for most tests. Cholesterol and fasting glucose need eight to twelve hours without food, though water is fine.
Do I need a referral?
No. Walk in and ask — you do not need to have been sent by anyone.
How much do blood tests cost?
It depends which tests, and you are quoted before anything is taken. A full blood count is inexpensive.
Can I get a printed report for my insurer?
Yes — an English report with values and reference ranges, which is what insurers and other doctors need.
I have a fever. Which test do I need?
Usually a dengue test and a full blood count together. Those two answer most tropical fevers, and both are same-visit.
Can I have bloods taken at night?
Yes. The laboratory runs around the clock, which on a fever that is climbing at midnight genuinely changes the decision.
What if everything comes back normal?
That is the commonest outcome and it is not a wasted visit. Knowing it is an ordinary virus lets you sleep and stop cancelling plans.
The island arithmetic, and where we fit in it
English-speaking doctors on site, 24 hours a day. It is worth spelling out why that matters rather than leaving it as a claim. Koh Phi Phi has no hospital, no road connection and no ambulance service. Getting to an emergency department means a boat, and the scheduled boats run in daylight — so for a good part of every twenty-four hours, the island’s own clinic is not the convenient option, it is the only one. Everything about how we are staffed follows from that single fact.
Beyond the island, Doctor Phi Phi Takecare Clinic belongs to the Takecare Clinic group, which operates across Krabi and Phuket. The practical value of that is continuity: if your treatment carries on after you leave, the next clinic already holds your notes, and a referral is a phone call between colleagues rather than a stack of paperwork you have to carry yourself.
Coming in
Doctor Phi Phi Takecare Clinic is 24 hours, every day, and that is the building being open with a doctor in it rather than a phone line that answers. No appointment is needed at any point, and there is no hour at which turning up is inconvenient for us. There are 2 branches on the island, about ten minutes apart on foot, and both keep the same hours — so head for whichever is closer rather than looking for the right one. Walk in, or reach us on +66 82 140 3858 or WhatsApp. If you would rather not move, ask for a doctor hotel visit and we will come to you.
If it turns out this is beyond what the island can treat, the same conversation is where the boat and the hospital transfer start being arranged. That process is worth beginning early rather than late here, because the options genuinely narrow as the evening goes on — and a decision made at nine is a considerably better decision than the same one made at two in the morning.