GIHep was started in 2009 out of the frustration with lack of access for clinically relevant calculators on the Internet for Gastroenterology and Hepatology. Given this lack of content Dr. Timothy Imler decided to take matters into his own hands and create a resource, GIHep.

For the past 5+ years GIHep has served the gastroenterology and hepatology community while adding additional resources and will continue to innovate ways to make clinical care for gastroenterologists and hepatologists easier.

### Impact

We have continued to expand in our influence touching each continent and more than 100 countries worldwide. We are used extensively within the academic community and have been mentioned at national conferences such as AASLD, DDW, and in multiple publications (see references at the bottom of page).

If you would like to cite GIHep for clinical calculations or have used the calculators as part of your research please let us know and use the following citation:

Imler, Timothy D. “CALCULATOR NAME HERE.” GIHep. The Imlers, n.d. Web. DATE ACCESSED HERE. <http://www.gihep.com/>.

## NAFLD Fibrosis Score

NAFLD Fibrosis Score Impaired Fasting Glucose/Diabetes: NoYes Age : AST : ALT : Platelet Count : BMI : Albumin : Formula : -1.675 + 0.037 × age (years) + 0.094 × BMI (kg/m2) + 1.13 × IFG/diabetes (yes = 1, no = 0) + 0.99 × AST/ALT ratio - 0.013 × platelet (×109/l) - 0.66 × albumin (g/dl) Explanation of Result : NAFLD Score < -1.455 = F0-F2 NAFLD Score -1.455 - 0.675 = indeterminate score NAFLD Score > 0.675 = F3-F4 * Please verify all calculations prior to clinical use.

## Fibrosis 4 Score

Fibrosis 4 Score Age : AST : ALT : Platelet Count : Formula : ( Age x AST ) / ( Platelts x ( sqr ( ALT ) ) Explanation of Result : For NASH : Fib4 score < 1.30 = F0-F1Fib4 score > 2.67 = F3-F4 For HCV with or without HIV : Fib4 score < 1.45 = F0-F1Fib4 score > 3.25 = F3-F4

## Crohn's Disease Activity Index (CDAI)

Crohn's Disease Activity Index (CDAI) Gender : Male : Female : Joint Pain / Arthralgia : NoYes Iritis / Uveitis : NoYes Erythema Nodosum / Apthous Ulcers : NoYes Anal Fissures or Abscesses : NoYes Other Fistula : NoYes Fever in Previous Week : NoYes # Loose BMs in Last Week : Abdominal Pain : NoneMildModerateSevere General Well Being : WellBelow ParPoorVery PoorTerrible Use of Lomotil or Opiates for Diarrhea : NoYes Abdominal Mass : NoneQuestionableDefinite Hematocrit : Current Weight (KG) : Height : 5'0 (152.4cm) 5'1 (154.9cm) 5'2 (157.5cm) 5'3 (160cm) 5'4 (162.6cm) 5'5 (165.1cm) 5'6 (167.6cm) 5'7 (170.2cm) 5'8 (172.7cm) 5'9 (175.3cm) 5'10 (177.8cm) 5'11 (180.3cm) 6'0 (182.9cm)< 6'1 (185.4cm) 6'2 (188cm) 6'3 (190.5cm) 6'4 (193cm) 6'5 (195.6cm) 6'6 (198.1cm) 6'7 (200.7cm) 6'8 (203.2cm) ...