Which option is NOT a type of LAL test?

Which option is NOT a type of LAL test?

• A. Luminescent LAL test
• B. Gel clot test
• C. Turbidimetric test
• D. Colorimetric test

Answer: (A)

The concept being tested is how LAL endotoxin tests are categorized by their readout method. The classic LAL formats are gel clot, turbidimetric, and chromogenic/colorimetric. A luminescent readout exists in some LAL-based assays, but it’s not typically listed as a separate standard type of LAL test; it’s a detection modality used within chromogenic/fluorometric setups rather than a distinct category. Therefore, the option describing a luminescent LAL test is not considered a standard LAL test type.

The concept being tested is how LAL endotoxin tests are categorized by their readout method. The classic LAL formats are gel clot, turbidimetric, and chromogenic/colorimetric. A luminescent readout exists in some LAL-based assays, but it’s not typically listed as a separate standard type of LAL test; it’s a detection modality used within chromogenic/fluorometric setups rather than a distinct category. Therefore, the option describing a luminescent LAL test is not considered a standard LAL test type.