What is the Metatron Nonlinear Analysis Systems (NLS)? The Metatron Nonlinear Analysis Systems (NLS) Diagnostic System (also known as Metatron-NLS analysis) is a pseudoscientific biofeedback method that providers use as a diagnostic tool. Later, the procedure became known as Metatron Diagnostics. In Germany, the Metatron Nonlinear Analysis Systems (NLS) device is marketed by the Hamburg-based Metavital Service GmbH (Ljudmila Michajlova). …