Kleihauer-Betke Score Calculator
Actual independently qualified Kleihauer-Betke fetal-origin cell fraction. Method specificity, adult Fcells, interpretation and clinical RhIGdecisions external; no blood-volume or dosage inferred.
Description
Kleihauer–Betke counting estimates a fetal-cell percentage from an independently assessed cell inventory.
Kleihauer–Betke counting estimates a fetal-cell percentage from an independently assessed cell inventory.1
Counting and laboratory classification are separate from computing a percentage.
When to use Kleihauer-Betke Score 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 Kleihauer-Betke Score Calculator and understand its results
- Establish the observation date, units, measurement context and independently applicable clinical reference or calibrated model.
- Enter independentlyCountedFetalOriginCells, independentlyAssessedTotalCells, using the field meanings and rules below, then run the tool.
- Read result.observedFetalCellPercent. 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 |
|---|---|---|---|
| independentlyCountedFetalOriginCells | Independently counted fetal origin cells | number | Required |
| independentlyAssessedTotalCells | Independently assessed total cells | number | Required |
Require integer total assessed cells 1–10000000 and integer fetal cells from zero through total. Return one hundred times fetal divided by total; the classification is supplied independently.
fetalCellPercent=100×fetalCells/totalCells 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.observedFetalCellPercent | Observed Fetal Cell Percent | number |
{
"input": {
"independentlyCountedFetalOriginCells": 10,
"independentlyAssessedTotalCells": 1000
},
"output": {
"result": {
"observedFetalCellPercent": 1
}
}
}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 Rh Immunoglobulin Dose Calculator: Rh immunoglobulin dosing depends on an applicable clinical protocol and the independently established assessment. For a complementary comparison, use Fetomaternal Hemorrhage Volume Calculator: A fetal-cell-equivalent volume scales an independently assessed fetal-cell percentage by a supplied maternal blood volume.
References
-
Kleihauer-Betke Score Calculator — tool.io
Similar or alternative tools
- Rh Immunoglobulin Dose Calculator
Rh immunoglobulin dosing depends on an applicable clinical protocol and the independently established assessment.
- Fetomaternal Hemorrhage Volume Calculator
A fetal-cell-equivalent volume scales an independently assessed fetal-cell percentage by a supplied maternal blood volume.