Description
Measure recorded specimen-fixation duration.
Pathology records connect specimens, blocks, slides, anatomical sites, processing timestamps and report versions. A recorded piece balance differs from verified tissue completeness, while cold-ischemia and fixation intervals describe distinct stages. Metadata and labels do not establish specimen adequacy, diagnosis, safe handling or report validity.
Measure recorded specimen-fixation duration.
When to use this tool
Use Specimen Fixation Start End Gap when you already have startTimestampMinutes, endTimestampMinutes and need to measure recorded specimen-fixation duration.
How to use the tool and how it works
- Enter startTimestampMinutes, endTimestampMinutes. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read durationMinutes. Use the output convention below.
Require endTimestampMinutes>=startTimestampMinutes; return end-start minutes.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| startTimestampMinutes | Start Timestamp Minutes | Required. Finite number. |
| endTimestampMinutes | End Timestamp Minutes | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| durationMinutes | Duration Minutes | Required. Finite number. |
{
"input": {
"startTimestampMinutes": 100,
"endTimestampMinutes": 460
},
"output": {
"durationMinutes": 360
}
}Limitations and assumptions
- No fixative, specimen adequacy, safe process or appropriate fixation interval is selected.
- 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
Reconcile original accession, cassette, block and slide records when tracing a specimen. Review the full processing timeline and controlled report history for adequacy and version questions; a local count residual or displayed amendment label does not verify them.
References
Similar or alternative tools
- Pathology Cold Ischemia Time Pair
Measure a supplied cold-ischemia interval before fixation starts.
- Tissue Cassette Piece Count Balance
Calculate recorded cassette-piece total and an unaccounted tissue-piece balance.