Control Band (C Line)
Definition
A second line that captures excess labelled antibody regardless of whether the analyte is present. Its appearance confirms the assay ran correctly. A strip with no control band is invalid.
Related terms
- Anti-Human Haemoglobin Antibody
- A monoclonal antibody raised against epitopes unique to human haemoglobin. Forms the detection and capture antibodies on the lateral-flow strip, conferring specificity...
- Cross-Reactivity
- The capacity of an antibody raised against one analyte to bind structurally related compounds. In RIA, cross-reactivity is the main driver of...
- Lateral-Flow Immunochromatography
- A test format in which a liquid sample flows laterally along a membrane, encounters labelled detection antibodies, and is captured at specific...
- Prozone Effect
- A false-negative serological result caused by antibody excess. When antibody concentration is too high relative to antigen, antibodies saturate individual antigen molecules...
- Test Band (T Line)
- The line on the lateral-flow card that appears when the anti-haemoglobin antibody captures haemoglobin-laden conjugate. Its presence constitutes a positive result.
Explained in
- RSID-Blood and ABAcard HemaTraceA second line that captures excess labelled antibody regardless of whether the analyte is present. Its appearance confirms the assay ran correctly. A strip wit...