Description
Subtract addedPreservative from finalVolume.
Dilution changes the concentration or source-equivalent quantity associated with a sample. A dilution fraction is the retained proportion; its reciprocal is a correction factor.
Subtract addedPreservative from finalVolume.
When to use this tool
Use Urine Collection Preservative Volume Adjustment when you need a supplied dilution or source-equivalent calculation.
How to use the tool and how it works
- Enter measuredConcentration, finalVolume, addedPreservative. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read originalSampleVolume, dilutionFactor, originalConcentration. Use the output convention below.
Subtract addedPreservative from finalVolume. Use finalVolume divided by this original sample volume as dilutionFactor and multiply measuredConcentration by that factor.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| measuredConcentration | Measured Concentration | Required. Finite number. |
| finalVolume | Final Volume | Required. Finite number. |
| addedPreservative | Added Preservative | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| originalSampleVolume | Original Sample Volume | Required. Finite number. |
| dilutionFactor | Dilution Factor | Required. Finite number. |
| originalConcentration | Original Concentration | Required. Finite number. |
{
"input": {
"measuredConcentration": 10,
"finalVolume": 110,
"addedPreservative": 10
},
"output": {
"originalSampleVolume": 100,
"dilutionFactor": 1.1,
"originalConcentration": 11
}
}Limitations and assumptions
- Assumes additive volumes and an analyte-free preservative; losses, reactions, and volume contraction are not modeled.
- 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
Trace every dilution stage and volume basis from the bench record, including recovery and blank assumptions where relevant.
References
Similar or alternative tools
- Renal Sample Concentration Dilution Term
Subtract blank from measured, then multiply by (sampleVolume + diluentVolume) / sampleVolume and additionalDilution.
- Renal Sample Volume Factor
Multiply nonnegative volume by positive unitFactor and dilutionFactor, requiring dilutionFactor at least one.