Alfa diagnostic lab

11/05/2026

👩‍⚕️🔬💉💊

03/05/2026

RA Factor vs Anti-CCP — both are blood tests used in diagnosing Rheumatoid Arthritis, but they are quite different in accuracy and purpose.

🔬 RA Factor (Rheumatoid Factor – RF)

What it is: An antibody (usually IgM) against IgG

Sensitivity: Moderate (≈60–80%)

Specificity: Low

Problem: Can be positive in many other conditions like:

Chronic infections (TB, hepatitis)

Other autoimmune diseases (SLE)

Even in healthy elderly people

Use: Good for screening, but not very specific

🧪 Anti-CCP (Anti-Cyclic Citrullinated Peptide)

What it is: Antibody against citrullinated proteins

Sensitivity: Similar to RF (≈60–75%)

Specificity: Very high (≈90–98%)

Advantage:

More accurate for RA diagnosis

Detects RA early (even before symptoms)

Predicts more severe disease and joint damage

Use: Best test for confirming RA

⚖️ Key Differences

Feature RA Factor (RF) Anti-CCP

Specificity Low Very high
Early detection Less reliable Very good
False positives Common Rare
Prognosis value Limited Strong

🧠 Clinical Insight

If RF + Anti-CCP both positive → Very strong evidence of RA

If RF negative but Anti-CCP positive → Early RA likely

If RF positive but Anti-CCP negative → Consider other diseases too

✅ Conclusion

RF = screening test

Anti-CCP = confirmatory & prognostic test (more reliable)

03/05/2026

Insulin is a hormone that helps your body manage blood sugar (glucose). It acts like a “key” that lets sugar move from your bloodstream into your cells, where it can be used for energy or stored for later.

1. After you eat

When you eat carbohydrates (like bread, rice, or fruit), your digestive system breaks them down into glucose. This glucose enters your bloodstream, raising your blood sugar level.

2. Insulin is released

Your pancreas (a gland behind your stomach) senses the rise in blood sugar and releases insulin into your bloodstream.

3. Insulin helps cells absorb glucose

Insulin travels through your blood and binds to cells—especially muscle, fat, and liver cells. This signals them to:

Open “channels” that let glucose enter

Use glucose for energy

Store extra glucose for later

4. Blood sugar goes down

As glucose leaves the bloodstream and enters cells, your blood sugar level drops back to normal.

5. Storage for later

If there’s extra glucose:

The liver stores it as glycogen

Fat cells can convert it into fat for long-term storage

Why insulin is important

Without insulin (or if it doesn’t work properly), glucose stays in the bloodstream instead of entering cells. This leads to high blood sugar, which is what happens in conditions like Diabetes.

In Type 1 Diabetes: the body doesn’t make insulin

In Type 2 Diabetes: the body doesn’t respond to insulin properly

04/02/2022

If your physician suspects cancer during physical examination or while taking a medical history, they might order certain cancer blood tests to guide the diagnosis. These blood tests are called tumor markers. Tumor markers could be specifically raised in certain cancers, and may give some idea about the cancer.

Basic test for cancer:-

*CBC complete blood count

Prostate-specific antigen (PSA) for prostate cancer

Cancer antigen-125 (CA-125) for ovarian cancer

Calcitonin for medullary thyroid cancer

Alpha-fetoprotein (AFP) for liver cancer and testicular cancer

Human chorionic gonadotropin (hCG) for germ

15/12/2021

15/12/2021

05/12/2021

is a yellowish pigment that is made during the normal breakdown of red blood cells.
passes through the liver and is eventually excreted out of the body.
than normal levels of bilirubin may indicate different types of liver or bile duct problems.
Alfa Diagnostic Lab