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PBC blood tests

A myPBCteam Member asked a question 💭

What tests should I get for PBC? My doctor only prescribes ALP, ALT, AST, GTP, and BILI. Shouldn't I also get my vitamin D, calcium, ferritin, and other levels checked?

May 21
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A myPBCteam Member

@A myPBCteam Member Primary Biliary Cholangitis (PBC) affects how the liver processes fat, which often results in misleadingly high standard cholesterol readings. Patients with PBC frequently have high levels of an abnormal, less dangerous lipoprotein called Lipoprotein X (LP-X) which skews the results therefore, standard lipid panels are less effective.

You need to get Apolipoprotein B-100 (ApoB-100) Test:

This specialized test specifically targets the dangerous, artery-clogging LDL particles rather than measuring the density of benign particles like LP-X. It gives you better understanding of cholesterol than the skewed data on the standard panels.

July 3 (edited)
myPBCteam

Great question! The tests your doctor currently orders are definitely core to monitoring PBC. Here's what those key markers tell you:

- ALP — the most important PBC marker; high levels signal bile duct damage
- ALT & AST — check for liver inflammation or damage
- GGT — suggests liver or bile duct issues
- Bilirubin — Show Full Answer

Great question! The tests your doctor currently orders are definitely core to monitoring PBC. Here's what those key markers tell you:

- ALP — the most important PBC marker; high levels signal bile duct damage
- ALT & AST — check for liver inflammation or damage
- GGT — suggests liver or bile duct issues
- Bilirubin — indicates how well bile is flowing

These are all part of what's often called a Comprehensive Metabolic Panel (CMP), which may also include albumin (how well your liver makes proteins) and electrolytes. You're absolutely right to think beyond just those basic tests. PBC can affect nutrient absorption, so additional monitoring is often recommended. It's very reasonable to ask your doctor about:

- Vitamin D — PBC can impair fat-soluble vitamin absorption
- Calcium — closely linked to bone health, which can be affected by PBC
- Ferritin — iron stores can be relevant with liver disease
- Cholesterol/lipid panel — over 50% of people with PBC have elevated lipid levels
- AMA (antimitochondrial antibodies) — a key diagnostic marker if not already tested

Bringing this up with your doctor is completely valid. A specialist, like a hepatologist, may be more familiar with the full picture of monitoring PBC comprehensively.

May 21

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