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Bracketing & matrixing (ICH Q1D)

In short

Bracketing (test only the extremes of a design factor — lowest and highest strength, smallest and largest pack) and matrixing (test a planned fraction of the full sample set at each time point) are the ICH Q1D reduced-design techniques that legally shrink a supplement stabilit...

Bracketing (test only the extremes of a design factor — lowest and highest strength, smallest and largest pack) and matrixing (test a planned fraction of the full sample set at each time point) are the ICH Q1D reduced-design techniques that legally shrink a supplement stability programme without breaking the registration. The justification must show factor homogeneity and is the difference between a 3-strength, 2-pack programme costing 36 vs 12 sample timepoints.

Regulatory anchors
  • ICH Q1D
How V5 handles it
QMS — quality records next to the work they concern.
Deviations, corrective actions and quality review sit in the same system as production, so each quality record references the work order, step and lot it concerns.
Document control — one version in force, every change signed and explained.
Draft the next revision while the current one stays in use, approve it under your sign-off route, and track training on it — with the history kept.
Related terms
ICH stability zones (IVb hot-humid)
Software that covers Bracketing & matrixing (ICH Q1D)
V5 Ultimate Dietary Supplements
Written for supplement contract manufacturers and brand owners tired of surviving FDA 483s on paper.
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