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Pulmonology · Internal Medicine

Light Criteria calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

g/dL

Allowed range: 0–15 g/dL

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g/dL

Allowed range: 0.1–15 g/dL

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U/L

Allowed range: 0–10000 U/L

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U/L

Allowed range: 0.1–10000 U/L

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Result

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Clinical inputs

  • Pleural-fluid protein (g/dL)Accepted range: 0 to 15
  • Serum protein (g/dL)Accepted range: 0.1 to 15
  • Pleural-fluid LDH (U/L)Accepted range: 0 to 10000
  • Serum LDH (U/L)Accepted range: 0.1 to 10000

Primary source

Light RW et al. Pleural effusions: the diagnostic separation of transudates and exudates. Ann Intern Med (1972)

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