ELISA Experimental Protocol Complete Series (5 Episodes)

severe

B/B0 Ratio Outside Acceptable Range at Curve Endpoints

The B/B0 ratio (bound/maximum bound) for the terminal point of the standard curve is either >95% or <5%, indicating insufficient competitive displacement range.

💡 3 · ✓ 3

severe

Antibody or Reagent Loss of Activity from Improper Storage

Progressive signal loss over time using the same reagents. Previously working protocols suddenly fail. Positive controls that worked before now show reduced or no signal.

💡 5 · ✓ 5

moderate

Excessive Signal Amplification in Detection System

Very high signals across all wells including low-concentration standards. Loss of discrimination between different antigen concentrations. Background approaches signal levels.

💡 4 · ✓ 4