Description
Subtract supplied reagent and matrix blanks from a signal.
Biochemical quantities depend on species definitions, mass versus amount basis, reference states, blank models and assay conditions. A free/bound difference does not establish equilibrium, a per-volume activity differs from activity per protein mass, and a dilution factor differs from its reciprocal aliquot fraction.
Subtract supplied reagent and matrix blanks from a signal.
When to use this tool
Use Assay Dual Blank Residual when you already have sampleSignal, reagentBlank, matrixBlank and need to subtract supplied reagent and matrix blanks from a signal.
How to use the tool and how it works
- Enter sampleSignal, reagentBlank, matrixBlank. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read correctedSignal. Use the output convention below.
Return sampleSignal-reagentBlank-matrixBlank, preserving signs.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| sampleSignal | Sample Signal | Required. Finite number. |
| reagentBlank | Reagent Blank | Required. Finite number. |
| matrixBlank | Matrix Blank | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| correctedSignal | Corrected Signal | Required. Finite number. |
{
"input": {
"sampleSignal": 100,
"reagentBlank": 8,
"matrixBlank": 12
},
"output": {
"correctedSignal": 80
}
}Limitations and assumptions
- Blank definitions must justify additive subtraction without double counting. No calibration, interaction correction, actual blank measurement or validated assay result is inferred.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use the full assay, reaction and calibration method with verified sample records. Check units, reference definitions, blanks and experimental assumptions before interpreting a local product, fraction or rate as a valid biochemical measurement.
References
Similar or alternative tools
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