What it measures
Looks for malaria parasites in a blood sample, under the microscope (a blood film) or with a rapid test for the parasites' proteins (antigens). If parasites are found, the lab reports the species and how many red cells are infected.
Why people test it
- Tested when a fever or flu-like illness starts during or after a trip to a malaria area.
- Repeated when the first sample is negative but malaria is still suspected.
Typical range
Reported as parasites seen or not seen (positive or negative), and a positive report names the species. Methods vary between labs, and your report shows how the lab reads the result.
Finger-prick or vein?
Offered as a vein draw only. The lab makes slides from the blood and may also run a rapid antigen test on it.
The NHS describes malaria as an emergency. With symptoms after travel to a malaria country in the past 12 months, it says to ask for an urgent GP appointment or contact NHS 111.