Embodiments of methods of performing a structured collection protocol on a collection device comprise providing a plurality of prior biomarker samples, wherein the prior biomarker samples comprise at least one measured value and plurality of contextualized data components linked to the prior biomarker samples, setting a first criterion, wherein the first criterion classifies prior biomarker samples as similar if prior biomarker samples share at least one identical contextualized data component, grouping biomarker samples that are determined to be similar based on the first criterion, calculating expected values for future biomarker samples which satisfy the first criterion, wherein the calculation is based on at least a subset of the group of similar prior biomarker samples, setting a second criterion, wherein the second criterion is an acceptable variance from the calculated expected values, a threshold, or both, collecting one or more biomarker samples which satisfy the first criterion, and evaluating via the processor the compliance of the collected biomarker samples with the second criterion.