Description
Calculate supplied QC target deviation and a standardized deviation.
Hematology records connect source annotations, specimens, instrument/reagent lots, unit bases and control references. A reported dilution correction depends on whether it has already been applied, while percentage and fraction are different representations. Local quantities and source tokens do not validate a sample, result or blood-product release.
Calculate supplied QC target deviation and a standardized deviation.
When to use this tool
Use Hematology Quality Control Target Deviation when you already have observedControl, suppliedTarget, suppliedStandardDeviation and need to calculate supplied QC target deviation and a standardized deviation.
How to use the tool and how it works
- Enter observedControl, suppliedTarget, suppliedStandardDeviation. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read signedDeviation, standardizedDeviation. Use the output convention below.
Require suppliedStandardDeviation>0; return observedControl-target and that difference/SD.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| observedControl | Observed Control | Required. Finite number. |
| suppliedTarget | Supplied Target | Required. Finite number. |
| suppliedStandardDeviation | Positive caller-supplied reference spread; no pass/fail QC threshold is selected. | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| signedDeviation | Signed Deviation | Required. Finite number. |
| standardizedDeviation | Standardized Deviation | Required. Finite number. |
{
"input": {
"observedControl": 105,
"suppliedTarget": 100,
"suppliedStandardDeviation": 5
},
"output": {
"signedDeviation": 5,
"standardizedDeviation": 1
}
}Limitations and assumptions
- Units must match; no SD, control distribution, acceptance rule, process stability or clinical result is estimated or validated.
- 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
Inspect the original laboratory, QC and product-traceability records before combining results. Use the complete controlled method and reporting convention; one target deviation, volume balance or censoring label does not establish quality or clinical interpretation.
References
Similar or alternative tools
- Hematology Tube Fill Target Gap
Measure recorded tube-fill volume relative to a supplied target.
- Hematology Result Dilution Factor
Apply a supplied dilution factor only when a result is not already corrected.