Newborn Hyperbilirubinemia Assessment Calculator

Written by Great Medico

Updated September 24, 2026 •2 min read

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Pediatric calculations reward careful attention to age, weight, and units. Newborn Hyperbilirubinemia Assessment Calculator uses only the child-specific fields shown in this tool to produce its estimate.

What this calculator does

Newborn Hyperbilirubinemia Assessment Calculator uses Infant age and Total serum bilirubin (TSB) to calculate simplified bilirubin reference comparison. Where supported, it also shows Simplified reference so the primary result is easier to check. It follows the exact field flow and engine behavior in this plugin rather than describing a different calculator with the same name. Children are not simply small adults: age, weight, gestational history, formulation, and clinical setting can change how a result should be used. Pediatric outputs deserve extra attention to units and the population for which the method was developed.

How to use it

Enter or select Infant age and Total serum bilirubin (TSB). Use the units offered by the calculator and keep paired laboratory or treatment values from the same clinical episode whenever the formula assumes that. If an entry is unknown, do not substitute a guess simply to obtain a number.

How the calculation works

This implementation compares the entered bilirubin with a simplified reference calculated as 5 + 0.18 × age in hours. That line is only an internal approximation and does not reproduce the current AAP gestational-age and neurotoxicity-risk-factor treatment curves.

Example

Using the sample values prefilled in this calculator, the primary result is 10 mg/dL (Below simplified age-based phototherapy reference) and Simplified reference is 13.6 mg/dL. This example demonstrates the plugin’s own calculation path; replace the sample inputs with verified values before interpreting a real result.

How to interpret the result

The “above/below” label is only relative to this plugin’s simplified line. It must not be interpreted as “phototherapy needed/not needed.”

Limitations and notes

This calculator does NOT implement the current AAP 2022 treatment curves, which depend on gestational age, age in hours, and neurotoxicity risk factors. Do not use its simplified line to decide phototherapy, escalation of care, or exchange transfusion.