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Reference.org
Laboratory developed test
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<p>Laboratory developed test (LDT) is a term used to refer to a certain class of <a href="/facts/In_vitro/evp3hAX6">in vitro</a> diagnostics (IVDs) that, in the U.S., were traditionally regulated under the <a href="/facts/Clinical_Laboratory_Improvement_Amendments/RnIGatpH">Clinical Laboratory Improvement Amendments</a> program. </p><p>Laboratory-developed tests (LDTs) are a class of in vitro diagnostics (IVDs) designed, manufactured, and used within a single laboratory. They are employed for various medical diagnoses and research applications, offering advantages in flexibility and fostering innovation in the diagnostics field. </p>