How do you calculate a fib-4 Index?
The FIB-4 index is calculated using the formula: FIB-4 = Age (years)×AST (U/L)/[PLT(109/L)×ALT1/2 (U/L)].
What is an ActiTest?
The ActiTest adds a marker for inflammatory activity (alanine aminotransferase: ALT). These markers are weighted depending on the patient’s age and gender. Testing is compliant with BioPredictive’s technical recommendations and approvals.
How is a FibroScan score calculated?
FibroScan measures scarring by measuring the stiffness of your liver. The fibrosis result is measured in kilopascals (kPa) It’s normally between 2 and 6 kPa. The highest possible result is 75 kPa. Many people with liver disease(s) have a result that’s higher than the normal range.
How do you calculate your elf score?
ELF score was auto-calculated by the instrument employing the recommended equation [ELF = 2.278 + 0.851 ln(HA) + 0.751 ln(PIIINP) + 0.394 ln(TIMP-1)] and expressed as a numerical value with no units.
How accurate is the FIB-4?
An FIB-4 index higher than 3.25 had a positive predictive value to confirm the existence of a significant fibrosis (F3-F4) of 82.1% with a specificity of 98.2%. Using these ranges, 72.8% of the 847 liver biopsies were correctly classified.
What is a normal FIB-4 score?
Conclusion: For values outside 1.45-3.25, the FIB-4 index is a simple, accurate, and inexpensive method for assessing liver fibrosis and proved to be concordant with FibroTest results.
How much does a FibroTest cost?
Table 3
| Base | Max | |
|---|---|---|
| Cost (2009 USD) | ||
| Screening test | ||
| Liver biopsy | $1,415 | $1,623 |
| FibroTest (FibroSure) | $236 | $295 |
What does a fibrosis score of F2 mean?
A fibrosis score of F2 (7.5 to 10 kPa) indicates moderate scarring that has spread outside the liver. A fibrosis score of F3 (10 to 14 kPa) indicates severe scarring which has spread and disrupts normal blood flow.
What is a normal elf score?
ELF score reference values ranged from 6.7 to 9.8 and were significantly higher for men vs. women (7.0–9.9 vs. 6.6–9.3, respectively). Afternoon values were slightly higher than morning values (6.7–9.9 vs. 6.6–9.5, respectively).