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The Malaria QBC (Quantitative Buffy Coat) test is a fluorescence microscopy-based malaria detection method that uses acridine o...
Also known as: QBC Malaria Test · Quantitative Buffy Coat Test · QBC Malaria Fluorescence Test · MP QBC Test
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The Malaria QBC (Quantitative Buffy Coat) test is a fluorescence microscopy-based malaria detection method that uses acridine orange dye to stain parasite DNA inside red blood cells, concentrating them in a specialised capillary tube for fluorescent examination. The QBC method is significantly more sensitive than standard Giemsa-stained smear microscopy for detecting low-density parasitaemia — making it particularly valuable in early infections, partially treated cases, and situations where standard smear may miss malaria. Results are available faster than conventional thick smear microscopy. No fasting required.
Key benefits of this package include:
What Does the Malaria Test — QBC Method (MP QBC) Measure?
| Level / Result | Possible Interpretation |
|---|---|
| Negative (No fluorescence at buffy coat zone) | No malaria parasites detected — low density infection or no infection. If clinical suspicion remains, repeat in 12–24 hours. |
| Positive (Fluorescent particles at buffy coat) | Malaria parasites detected — confirm species with Giemsa smear or RDT and initiate treatment |
| Positive QBC + Giemsa smear confirmation | Definitive malaria diagnosis — species identified, parasite density estimated, treatment guided |
| Positive QBC + Negative smear | Low density parasitaemia detected by sensitive QBC but below smear threshold — treat as malaria if clinical picture consistent |
Important Note: QBC is highly sensitive but less specific for species identification than Giemsa thin smear — positive QBC results should ideally be confirmed with a conventional smear or RDT for species determination. A negative QBC in a high-suspicion case should be followed by repeat testing at 12–24 hour intervals. All results must be interpreted by a physician.
QBC vs. Smear vs. RDT — Choosing the Right Malaria Test: Standard Giemsa Smear (Test 48): Gold standard, best species identification, enables parasite density quantification — but requires expert microscopist and takes longer. QBC Method (Test 54): More sensitive for low density; faster; better for early/partial treatment cases — but less reliable for species ID. Rapid Diagnostic Test / Malarial Antigen (Test 55): Fastest (15–20 minutes); no microscopy needed; good sensitivity for P. falciparum HRP2; less sensitive for non-falciparum species. In clinical practice, combining QBC or smear with an RDT maximises sensitivity and speeds diagnosis. Medall offers all three methods.
Book once, we handle the rest. Our certified phlebotomist arrives at your doorstep — your report is delivered within 24 hours.
Trusted by millions of Customers across South India — these are the tests our doctors recommend most.
Screens for anaemia, infections, and immune health
