Indunil Karunarathna on CSF Xanthochromia in SAH
Indunil Karunarathna, Founder of Uva Clinical Research Lab (UCRL), shared on LinkedIn:
”Xanthochromia in Cerebrospinal Fluid Diagnostic Relevance, and Implications in Subarachnoid Hemorrhage
Uva Clinical Research Lab 2025, Uva Clinical Anaesthesia and Intensive Care ISSN 2827-7198, 2025
Xanthochromia refers to the yellowish discoloration of cerebrospinal fluid (CSF) due to the presence of bilirubin—a breakdown product of hemoglobin resulting from the lysis of red blood cells in the subarachnoid space.
This clinical finding holds paramount diagnostic significance, particularly in the context of suspected subarachnoid hemorrhage (SAH), where imaging may be inconclusive.
Xanthochromia typically becomes detectable within 6 to 12 hours after hemorrhage and may persist for up to four weeks, offering a critical window for diagnosis when radiologic modalities fail.
This comprehensive review elucidates the etiology, epidemiology, pathophysiology, histopathological basis, and clinical evaluation of xanthochromia.
Etiologically, while SAH is the most clinically urgent cause, other contributors include neoplasms, infections, and systemic hyperbilirubinemia.
The visual detection of xanthochromia remains common, but spectrophotometry provides superior sensitivity and specificity, allowing precise differentiation of bilirubin from other pigments such as oxyhemoglobin.
The integration of lumbar puncture and CSF analysis into the diagnostic algorithm remains indispensable, especially after a negative noncontrast CT scan in patients presenting with thunderclap headaches or other SAH-compatible symptoms.
A multidisciplinary approach involving emergency physicians, neurologists, neurosurgeons, radiologists, and laboratory technicians is vital to ensure accurate diagnosis and timely treatment, particularly in the context of aneurysmal rupture.
Understanding the nuances of xanthochromia enhances diagnostic accuracy, minimizes unnecessary interventions, and improves patient outcomes in neurologic emergencies.”
Read the full article here.
Article: Xanthochromia in Cerebrospinal Fluid Diagnostic Relevance, and Implications in Subarachnoid Hemorrhage
Author: Indunil Karunarathna
Stay updated with Hemostasis Today.
-
Jul 14, 2026, 19:35Daratumumab in Difficult-to-Treat iTTP: Updated Results from the International DarTTP Study
-
Jul 14, 2026, 17:1610 Posts Not To Miss from ISTH 2026, Part 3
-
Jul 14, 2026, 15:27Dianne E Van Der Wal: Celebrating Scientific Contributions at ISTH 2026
-
Jul 14, 2026, 15:13Alfonso Tafur: RIETE Registry Analysis Supports More Equitable Approaches to VTE Care
-
Jul 14, 2026, 15:03Heghine Khachatryan: Phase III Trial Results Support BAFF-R Inhibition in Corticosteroid-Refractory ITP
-
Jul 14, 2026, 14:51Nathan Connell: ISTH 2026 Highlights the Power of Lifelong Collaboration
-
Jul 14, 2026, 14:42Wolfgang Miesbach: VOYAGER1 Highlights Progress Toward Injection-Free Care in Hemophilia A
-
Jul 14, 2026, 12:08Elvira Grandone: Finding the Right LMWH Dose for Pregnant Patients Suffering From DVT
-
Jul 14, 2026, 12:05Eloïse Laouenan: From Washington to Paris – Join GETBO at ISTH 2026