Phototherapy Threshold for Neonatal Jaundice

Determine phototherapy initiation threshold (total serum bilirubin in mg/dL) based on gestational age, hours of life, and neurotoxicity risk factors per AAP guidelines.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Determine phototherapy initiation threshold (total serum bilirubin in mg/dL) based on gestational age, hours of life, and neurotoxicity risk factors per AAP guidelines

Each component has a specific meaning:

  • Gestational age — The gestational age recorded for the scenario being assessed.
  • Hours of life — The hours of life recorded for the scenario being assessed.
  • Neurotoxicity risk factors per AAP guidelines — The neurotoxicity risk factors per aap guidelines recorded for the scenario being assessed.

Note: Interpret the phototherapy threshold result against the thresholds and context described above.

How to Use

Enter the gestational age, hours of life, neurotoxicity risk factors per AAP guidelines for the scenario you are assessing. Determine phototherapy initiation threshold (total serum bilirubin in mg/dL) based on gestational age, hours of life, and neurotoxicity risk factors per AAP guidelines. Use the phototherapy threshold result to inform your calculation.

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