Template:Lights Criteria Calculator: Difference between revisions

Latest revision as of 16:49, 21 March 2026

Interactive Light's Criteria calculator for pleural effusion. Requires the calculator gadget. Usage: {{Lights Criteria Calculator}}

Light's Criteria — Pleural Effusion
Parameter	Value
Pleural fluid protein (g/dL)
Serum protein (g/dL)
Pleural fluid LDH (IU/L)
Serum LDH (IU/L)
Upper limit of normal serum LDH (IU/L)
Results
Pleural protein / Serum protein ratio
Pleural LDH / Serum LDH ratio
Pleural LDH / ULN serum LDH

Interpretation
Exudative (any 1 of:)	Pleural protein/serum protein > 0.5 OR Pleural LDH/serum LDH > 0.6 OR Pleural LDH > 2/3 ULN serum LDH. Causes: infection, malignancy, PE, autoimmune, etc.
Transudative	None of the above criteria met. Causes: CHF, cirrhosis, nephrotic syndrome, PE.

References
Light RW, Macgregor MI, Luchsinger PC, et al. Pleural effusions: the diagnostic separation of transudates and exudates. Ann Intern Med. 1972;77(4):507-513. PMID 4642731.

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 Usage: <code><nowiki>{{Lights Criteria Calculator}}</nowiki></code>
 [[Category:Calculator templates]]</noinclude>
+=== Light's Criteria ===
 <div class="calculator-container" data-calculator-refresh-on-load="true">
 {| class="wikitable" style="width:100%; border-collapse:collapse;"
-|+ style="font-size:16px; font-weight:bold; padding:8px; background:#1a5276; color:white;" | Light's Criteria — Pleural Effusion
+|+ style="font-size:16px; font-weight:bold; padding:8px; background:#1a5276; color:white;" | Light's Criteria — [[Pleural effusion|Pleural Effusion]]
 |-
 ! style="width:50%; background:#d4e6f1;" | Parameter