Intake Rate Adjustment Calculator

Conditional linear same-substance dose rescaling by independently established intake-rate ratio, assuming fixed concentration, absorption and bodymass. Not universal intake guidance or toxicodynamic scaling.

Description

Linear intake-rate adjustment preserves a supplied scenario's concentration and other dose assumptions while changing intake.

Linear intake-rate adjustment preserves a supplied scenario's concentration and other dose assumptions while changing intake.1

It does not model changes in absorption, body mass or kinetics.

When to use Intake Rate Adjustment Calculator

Use this tool to calculate or review the supplied observations under the stated rules. Establish the chemical, exposure route, endpoint, measurement basis and independently applicable assay or assessment reference.

How to use Intake Rate Adjustment Calculator and understand its results

  1. Establish the chemical, exposure route, endpoint, measurement basis and independently applicable assay or assessment reference.
  2. Enter actualMeasuredOriginalIntakeRate, callerIndependentlyEstablishedComparisonIntakeRate, actualOriginalScenarioDose, using the field meanings and rules below, then run the tool.
  3. Read result.conditionalIntakeScaledDose. Use the units and subtraction order below to interpret each value; retain negative differences where returned.
  4. Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
Input fieldMeaningValue typeRequirement
actualMeasuredOriginalIntakeRateActual measured original intake ratenumberRequired
callerIndependentlyEstablishedComparisonIntakeRateCaller independently established comparison intake ratenumberRequired
actualOriginalScenarioDoseActual original scenario dosenumberRequired

Require a positive original intake reference, nonnegative comparison intake reference and nonnegative original dose. Scale dose by comparison divided by original intake. Compatible definitions, exposure basis and units are established by the caller.

adjustedDose=originalDose×comparisonIntake/originalIntake

Use the matching field units and the exact boundary, ordering and reference rules above.

Output fieldMeaningValue type
resultQualified observed calculation or explicit referenceobject
result.conditionalIntakeScaledDoseOriginal dose scaled by comparison/original intake rate.number
json
{
  "input": {
    "actualMeasuredOriginalIntakeRate": 2,
    "callerIndependentlyEstablishedComparisonIntakeRate": 3,
    "actualOriginalScenarioDose": 4
  },
  "output": {
    "result": {
      "conditionalIntakeScaledDose": 6
    }
  }
}

Limitations and assumptions

Chemical identity, route, assay, exposure basis and reference applicability are caller-established. The output supplies no causal conclusion, universal toxicity threshold or authoritative regulatory determination.

Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Extremely large composite outputs are rejected.

Alternative or Complementary methods

For a related step, use Exposure Frequency Adjustment Calculator: An exposure-day average depends on how many calendar days are exposed under the declared scenario. For a complementary comparison, use Cumulative Exposure Calculator: Cumulative dose bookkeeping sums daily dose rates across disjoint observed intervals.

References

  1. Intake Rate Adjustment Calculator — tool.io

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