Pulmonology · Internal Medicine
Light's Criteria for Exudative Effusions calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Result
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0
No Light criterion met
Band: No Light criterion met
Interpretation. No Light criterion met
Suggested management. No Light criterion is met; the effusion is classified as transudative by these criteria.
Light's Criteria for Exudative Effusions: 0 — No Light criterion met. Interpretation: No Light criterion met What to do: No Light criterion is met; the effusion is classified as transudative by these criteria. Inputs: Pleural fluid / serum protein >0.5: false; Pleural fluid / serum LDH >0.6: false; Pleural fluid LDH > two-thirds the upper limit of normal serum LDH: false Source: Light RW, Macgregor MI, Luchsinger PC, Ball WC Jr. Pleural effusions: the diagnostic separation of transudates and exudates. Ann Intern Med. DOI: 10.7326/0003-4819-77-4-507. PMID: 4642731. Scope: exudate if pleural/serum protein >0.5, or pleural/serum LDH >0.6, or pleural LDH > two-thirds the upper limit of normal serum LDH; any one criterion met classifies as exudate. (1972)
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Clinical inputs
- Pleural fluid / serum protein >0.5
- Pleural fluid / serum LDH >0.6
- Pleural fluid LDH > two-thirds the upper limit of normal serum LDH
Primary source
Light RW, Macgregor MI, Luchsinger PC, Ball WC Jr. Pleural effusions: the diagnostic separation of transudates and exudates. Ann Intern Med. DOI: 10.7326/0003-4819-77-4-507. PMID: 4642731. Scope: exudate if pleural/serum protein >0.5, or pleural/serum LDH >0.6, or pleural LDH > two-thirds the upper limit of normal serum LDH; any one criterion met classifies as exudate. (1972)
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