Table 3.
Technique | Principle | Type of Sample Analyzed | Advantages | Disadvantages | Field or Laboratory Use | Sensitivity | Specificity | References |
---|---|---|---|---|---|---|---|---|
Microscopic (conventional) | Direct observation of parasite eggs | Stool (S), urine (U) | Inexpensive, requires minimal equipment | Time-consuming, low sensitivity for early/minute infections | Laboratory (Lab) | Low (L) (especially in early stages) | High (H) (when parasite eggs are present) | [71] |
PCR | Amplifies and detects parasite DNA | Blood (B), U, S, | Highly sensitive, can detect low levels of parasite DNA | Expensive, requires technical expertise | Lab | H | H | [73] |
LAMP | Amplifies parasite DNA using isothermal conditions | B, U, S | Rapid, does not require a thermal cycler | Requires trained personnel, potential false positives | Both | H | H | [74] |
RPA | Amplifies parasite DNA | B, U, S | Fast, field-deployable, does not require complex instruments | Moderate cost, less validation in field conditions | Both | H | H | [75] |
Rapid diagnostic test | Detects antibodies or antigens using immunochromatography | B, U | Simple, rapid, field-deployable | Limited sensitivity and specificity in early infection stages | Field | M | M | |
Lateral flow assay | Detects antigens using antibody-labeled particles | B, U | Simple, rapid, portable, field-friendly | Limited sensitivity and specificity | Field | M | M | [76] |
Smartphone-based devices | Uses smartphone technology to analyze results from lateral flow assays | B, U | Portable, easy to use, field-deployable | Limited validation and availability | Field | M to H (depends on device) | M | [76] |
ELISA | Detects host immune response proteins (antibodies, cytokines, etc.) | B | Can assess host immune response, widely used | Requires laboratory setup, moderate sensitivity | Lab | M | M | [77] |
Mass spectroscopy | Detects specific proteins or biomarkers | B, tissue (T) | Highly sensitive, can identify proteins | Expensive, requires complex instruments | Lab | H | H | [78] |
Proteomic techniques | Detects schistosome proteins (e.g., SjTs4, MF3, SjPGM, SjRAD23) | B, U | Can differentiate between current and past infections | Expensive, requires high technical expertise | Lab | H | H | [3] |
MicroRNA detection | Detects schistosomes-specific microRNAs | B, U, S | High sensitivity | Expensive, requires field validation | Lab | H | H | [72] |
Note: Lab—laboratory; H—high; M—moderate; L—low.