Which method is named after the developers Jendrassik and Grof for bilirubin quantification?

Which method is named after the developers Jendrassik and Grof for bilirubin quantification?

• A. Jendrassik-Grof method
• B. Bilirubinometer
• C. Zimmerman method
• D. Diazo method

Answer: (A)

Jendrassik-Grof is a diazo-based bilirubin assay developed by Jendrassik and Grof. It uses a diazotized reagent to form a colored product with bilirubin, and crucially adds an accelerator solution containing caffeine (often with methanol) to solubilize unconjugated bilirubin so that total bilirubin can be measured. A second measurement without the accelerator yields direct (conjugated) bilirubin, and the indirect (unconjugated) bilirubin is found by subtracting direct from total. This named method is the standard approach because it provides accurate, practical quantification of bilirubin in clinical samples. Other options refer to different tools or methods, not the Jendrassik-Grof approach.

Jendrassik-Grof is a diazo-based bilirubin assay developed by Jendrassik and Grof. It uses a diazotized reagent to form a colored product with bilirubin, and crucially adds an accelerator solution containing caffeine (often with methanol) to solubilize unconjugated bilirubin so that total bilirubin can be measured. A second measurement without the accelerator yields direct (conjugated) bilirubin, and the indirect (unconjugated) bilirubin is found by subtracting direct from total. This named method is the standard approach because it provides accurate, practical quantification of bilirubin in clinical samples. Other options refer to different tools or methods, not the Jendrassik-Grof approach.