Minimum criteria for a microarray device To qualify as a microarray, the analytical device must satisfy which set of attributes?

Introduction / Context:
Microarrays rely on many miniature test sites arranged in an ordered pattern on a planar support, enabling simultaneous specific binding events and readout.

Given Data / Assumptions:

• “Micro” implies microscopic feature size.
• Arrays require an ordered layout to map signals to probes.
• Planar substrates (glass, silicon) are standard.
• Specific recognition is essential for meaningful analytics.

Concept / Approach:
All listed attributes—order, micro-scale features, planar geometry, and specificity—are fundamental. Lacking any one compromises the definition or utility of a microarray device.

Step-by-Step Solution:

Verification / Alternative check:
Manufacturers and standards documents specify planar substrates with ordered spots of micrometer scale and validated specific binding chemistries.

Why Other Options Are Wrong:

• Single-attribute choices are incomplete.
• Fluorescence detection is common but not definitional; label-free arrays exist.

Common Pitfalls:
Equating detection method with platform definition; the geometry and specificity define microarrays.

Final Answer:
All of these (ordered, microscopic, planar, and specific)