Blood Loss Estimate Calculator
Conditional collected-fluid minus independently estimated nonblood content plus matched wet-minus-dry mass/density. Actual disjoint inventories, fluid contamination and density applicability essential; not diagnose haemorrhage or substitute urgent clinical assessment.
Description
Quantified blood loss combines collected-fluid accounting with a wet-minus-dry material mass estimate.
Quantified blood loss combines collected-fluid accounting with a wet-minus-dry material mass estimate.1
Nonblood fluid, dry mass and blood density must be independently matched to the observations.
When to use Blood Loss Estimate Calculator
Use this tool to calculate or review the supplied observations under the stated rules. Establish the observation date, units, measurement context and independently applicable clinical reference or calibrated model.
How to use Blood Loss Estimate Calculator and understand its results
- Establish the observation date, units, measurement context and independently applicable clinical reference or calibrated model.
- Enter actualCollectedFluidMl, independentlyEstimatedNonBloodFluidMl, observedWetMaterialMassGrams, verifiedDryMaterialMassGrams, callerVerifiedBloodDensityGramsPerMl, using the field meanings and rules below, then run the tool.
- Read result.conditionalQuantifiedBloodVolumeMl. Use the units and sign conventions below.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualCollectedFluidMl | Actual collected fluid ml | number | Required |
| independentlyEstimatedNonBloodFluidMl | Independently estimated non blood fluid ml | number | Required |
| observedWetMaterialMassGrams | Observed wet material mass grams | number | Required |
| verifiedDryMaterialMassGrams | Verified dry material mass grams | number | Required |
| callerVerifiedBloodDensityGramsPerMl | Caller verified blood density grams per ml | number | Required |
Require nonnegative collected/nonblood fluid volumes and wet/dry masses, with nonblood≤collected and dry≤wet. Blood density in grams per milliliter must be positive. Return collected-minus-nonblood milliliters plus wet-minus-dry grams divided by density. No automatic density or clinical severity threshold is applied.
conditionalBloodVolumeMl=collectedMl−nonbloodMl+(wetGrams−dryGrams)/bloodDensityGramsPerMl Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Structured result; its nested fields below contain the actual calculation or selected reference | object |
| result.conditionalQuantifiedBloodVolumeMl | Conditional Quantified Blood Volume Ml | number |
{
"input": {
"actualCollectedFluidMl": 500,
"independentlyEstimatedNonBloodFluidMl": 100,
"observedWetMaterialMassGrams": 200,
"verifiedDryMaterialMassGrams": 100,
"callerVerifiedBloodDensityGramsPerMl": 1
},
"output": {
"result": {
"conditionalQuantifiedBloodVolumeMl": 500
}
}
}Limitations and assumptions
Dating evidence, acquisition conditions and applicable clinical references remain independently established. The output describes supplied observations or a conditional model without diagnosing an outcome, choosing a dose or verifying clinical applicability.
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 Maternal Blood Volume Increase Calculator: A blood-volume expansion scenario applies an independently established expansion fraction to a baseline volume. For a complementary comparison, use Pregnancy Anemia Checker: Hemoglobin interpretation in pregnancy depends on an applicable reference, units and gestational context.
References
-
Blood Loss Estimate Calculator — tool.io
Similar or alternative tools
- Maternal Blood Volume Increase Calculator
A blood-volume expansion scenario applies an independently established expansion fraction to a baseline volume.
- Pregnancy Anemia Checker
Hemoglobin interpretation in pregnancy depends on an applicable reference, units and gestational context.