Finding the right tests…
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Finding the right tests…
Haematology
MP BY CARD is a rapid diagnostic test that checks a drop of your blood for proteins made by malaria parasites, rather than looking at the parasites themselves under a microscope. Blood from a finger prick moves along a test strip coated with antibodies, and coloured lines appear within about fifteen to twenty minutes if the parasite's protein is present. It's designed for situations where a fast answer matters and a microscope or trained reader isn't immediately available. The trade-off is precision: this test is good at telling you if malaria protein is present, but it isn't built to reliably tell you which of the four malaria species is responsible, which can matter for treatment.
The strip shows a control line, which confirms the test worked, and one or more test lines depending on the kit, which turn positive if malaria antigen is detected. Some card tests report only a general malaria positive-or-negative result, while others distinguish Plasmodium falciparum from other species using a second line. The line's presence, not its darkness, is what's read as positive; a faint line still counts as a positive result.
Malaria rapid diagnostic tests work by detecting specific proteins that malaria parasites release into the bloodstream, using the same lateral-flow strip technology found in many other rapid tests. A small blood sample is mixed with a buffer solution that carries it across a nitrocellulose strip, where dye-labelled antibodies bind to the parasite protein and produce a visible line.
A card test can tell your doctor that malaria antigen is present, but on its own it can't always confirm which malaria species is involved the way examining the parasite under a microscope can. Because treatment differs by species, a positive card result is often followed up with a blood smear to identify the parasite type before treatment is finalised.
The World Health Organization has described rapid diagnostic tests as a practical alternative to microscopy in settings where good quality microscopy isn't readily available, since they need no equipment beyond the kit itself and give a result in minutes. A single negative card test also doesn't fully rule out malaria, particularly early in an infection when parasite levels are still low, so repeat testing or a blood smear may be advised if symptoms continue.
The card test detects a parasite protein and gives a result in minutes without a microscope. A blood smear involves examining the parasite directly under a microscope, which can identify the species and is considered more precise.
Most malaria card tests are read within about fifteen to twenty minutes of applying the blood sample. No overnight lab processing is needed.
Some kits distinguish one common species from others using separate lines, but many card tests only report a general positive or negative result. A blood smear is used when species identification matters for treatment.
Not completely. A single negative result doesn't fully exclude malaria, especially early in an infection, so your doctor may ask for repeat testing or a blood smear if symptoms continue.
This page is general information about the test, not medical advice. Your own report's reference ranges apply — please discuss your results with your doctor.
Card tests need no microscope or specially trained reader and give a result quickly. That makes them useful when a fast first answer is needed before other testing.
It depends on the kit. Some detect only P. falciparum, while others can flag other Plasmodium species as well; ask your doctor or the centre which kit is used.