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R-factor (R-value) for liver injury 계산기

R-factor = (ALT / ALT의 ULN ) / ( ALP / ALP의 ULN )

ALT (U/L) :

ALT의 ULN (U/L) :

ALP (U/L) :

ALP의 ULN (U/L) :

※ ULN : Upper Limit of Normal (정상 상한치)




R factor ＞ 5 : Hepatocellular injury pattern
R factor 2 ~ 5 : Mixed injury pattern
R factor ＜ 2 : Cholestatic injury pattern

관련 계산기
AST/ALT ratio 계산기 (De Ritis ratio) mDF 계산기 modified Discriminant Function MELD 계산기 MELD-Na, MELD 3.0 포함 GAHS 계산기 Glasgow Alcoholic Hepatitis Score ABIC 계산기 Age, Bilirubin, INR, Creatinine Lille 계산기 Lille model score calculator ANI 계산기 ALD 와 NAFLD 의 구별 Child-Turcotte-Pugh (Child-Pugh) score 계산기 SAAG 계산기 serum-ascites albumin gradient APRI (AST to Platelet Ratio Index) 계산기 FIB-4 (Fibrosis-4) 계산기 NAFLD Fibrosis Score (NFS, Non-Alcoholic Fatty Liver Disease) HSI (Hepatic Steatosis Index) 계산기 R-factor (R-value) for liver injury 계산기
Am J Gastroenterol 2014; 109:950–966;
An algorithm to evaluate suspected idiosyncratic drug-induced liver injury (DILI). The R -value cutoff numbers of 2 and 5 serve only as a guideline. Which tests and their order must be based on the overall clinical picture including risk factors for competing diagnosis (e.g., recent travel to hepatitis E virus (HEV) endemic area), associated symptoms (e.g., abdominal pain, fever), and timing of laboratory tests (i.e., the R -value may change as the DILI evolves). ALT, alanine aminotransferase; Alk P, alkaline phosphatase; CMV, cytomegalovirus; EBV, Epstein – Barr virus; HCV, hepatitis C virus; HSV, herpes simplex virus; MR, magnetic resonance; ULN, upper limit of normal. (Am J Gastroenterol 2014; 109:950–966;)
N Engl J Med 2019;381:264-273
N Engl J Med 2019;381:264-273
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