InstalabFibroTest-ActiTest
Should you take a FibroTest-ActiTest test?
This test is most useful if any of these apply to you.
8 Biomarkers Included
- FibroTest ScoreThe headline number. It blends five blood markers with your age and sex into one estimate of how much scarring, from none to cirrhosis, has built up in your liver.A high score points to significant liver scarring that warrants specialist evaluation.
- ActiTest ScoreUses the same markers plus one liver enzyme to estimate active inflammation, the ongoing injury that drives scarring. It shows whether damage is still in motion, not just how much has accumulated.A high score means active liver injury that may still be reversible if addressed.
- Alpha-2-MacroglobulinA large blood protein the liver makes more of as scar tissue forms. It is one of the panel's core scarring signals.Rising levels are among the earliest measurable clues that fibrosis is developing.
- HaptoglobinA blood protein that tends to fall as the liver scars, so a low value pushes the scarring estimate higher.Low levels can reflect scarring, but also harmless red blood cell breakdown.
- Apolipoprotein A1The main protein carried on good cholesterol particles, made by the liver. Levels tend to decline as fibrosis advances, so a drop raises the score.A fall can signal reduced liver synthetic capacity as scarring progresses.
- Total BilirubinA yellow pigment the liver clears from the blood. It rises when the liver struggles to process it, adding to the scarring estimate.High bilirubin can indicate reduced liver function, but harmless genetic traits also raise it.
- ALTA liver enzyme (alanine aminotransferase) released when liver cells are injured. It is the marker that separates the activity score from the scarring score.Elevated levels signal ongoing liver cell damage happening right now.
- GGTA liver enzyme (gamma-glutamyl transferase) that rises with bile duct stress, alcohol, and fatty liver. It adds sensitivity to both scores.Elevation flags active liver stress, often from alcohol or metabolic fatty liver.
About FibroTest-ActiTest
Your liver can lose a large share of its healthy tissue to scarring before you feel anything at all. By the time fatigue, swelling, or yellowing skin appear, the damage is often advanced. This panel is built to catch that quiet process earlier, using a single blood draw.
It folds six routine blood measurements into two scores. One estimates how much scarring, called fibrosis, has built up. The other estimates how much active inflammation is driving it. Together they turn scattered liver numbers into a read on where your liver actually stands.
What This Panel Reveals
Liver damage has two separate dimensions, and collapsing them into one is a common mistake. Scarring (fibrosis) is the slow structural change that stiffens the liver over years. Inflammation (activity) is the ongoing injury happening right now. You can have heavy scarring with little active inflammation, or the reverse.
The first score reflects long-term structural damage, staged from none up to cirrhosis, which is the most advanced scarring (a scale doctors label F0 through F4). The second score, which adds one more enzyme to the same math, reflects how much cell injury is happening currently. Reading both tells you not just how much damage exists, but whether it is still moving.
The value is in the combination. As a liver scars, these six markers move in different directions: some rise, some fall. A proprietary formula weighs those shifts against your age and sex to produce the scores, which is something no single liver enzyme can do on its own.
How to Read Your Results Together
Both scores run from 0 to 1, and lower is better. The most useful reading comes from looking at the two side by side rather than one at a time.
| Pattern | What It Suggests |
|---|---|
| Low scarring score, low activity score | Little scarring and little active injury. Reassuring. Recheck periodically. |
| Low scarring score, high activity score | Early disease with active inflammation. The window to intervene before scarring sets in. |
| High scarring score, low activity score | Established scarring that may now be stable. Warrants specialist evaluation and monitoring. |
| High scarring score, high activity score | Advanced scarring still being actively driven. A reason for prompt liver-specialist referral. |
One of the panel's most dependable strengths is ruling problems out. In chronic hepatitis C, a low scarring score correctly excluded meaningful scarring about 91% of the time, and a low activity score excluded meaningful inflammation about 85% of the time. A clearly low pair of scores is strong reassurance.
What to Do with Your Results
A single low pair of scores, with no risk factors, means routine rechecking is enough. Any elevated score deserves a second look first, because a few conditions can distort the panel, so confirm before acting on it.
An elevated or rising result is a reason to see a hepatologist, a liver specialist. They will often confirm with an imaging test that measures liver stiffness (elastography, such as FibroScan), which pairs well with this panel. In chronic hepatitis C, combining a blood score with a stiffness scan is more accurate for detecting significant scarring than either one alone, though this added benefit is less consistent for cirrhosis or for other liver diseases.
These scores also carry weight beyond structure. In people with fatty liver disease, higher scores predicted liver-related death over the following decade, which is why an elevated result is worth acting on rather than filing away.
Serial tracking is where the panel earns its keep. Because it uses the same blood measurements each time, changes between draws reflect real shifts in your liver. If you carry risk factors like fatty liver, heavy alcohol use, or viral hepatitis, a retest every 6 to 12 months is a reasonable clinical rhythm, and sooner after a major change such as significant weight loss or starting treatment.
When Results Can Be Misleading
A few conditions shift several components at once and can push the scores in the wrong direction. Because the panel includes bilirubin plus proteins that respond to inflammation and to red blood cell breakdown, certain situations distort it.
- Gilbert syndrome, a common and harmless genetic trait that raises bilirubin, can push the scarring score up falsely.
- Acute hemolysis, meaning rapid red blood cell breakdown, lowers haptoglobin and can mimic scarring.
- An active infection or acute inflammation raises alpha-2-macroglobulin, one of the panel's proteins, which most often pushes the scarring score up falsely.
- A sudden flare of liver injury or a blockage of bile flow can throw off both scores at once.
These higher-risk profiles are present in roughly 3% of people tested. This is also why the panel is not meant to replace a biopsy in complicated cases, and why an abnormal result should be confirmed rather than acted on in isolation.