Precise Arthritis & Bone Diagnostic Profiles — Early Detection, Better Outcomes

Why is anti-CCP more important than RA Factor for diagnosing rheumatoid arthritis?

A: Anti-CCP (anti-cyclic citrullinated peptide) has 95%+ specificity for RA versus 70–80% for Rheumatoid Factor — it also appears earlier in the disease, often before symptoms, making it the superior marker for early diagnosis and differentiation from other arthritis types.

hat T-score indicates osteoporosis on a DEXA scan?

A: A T-score of -1.0 to -2.5 indicates Osteopenia (reduced bone density); below -2.5 confirms Osteoporosis per WHO criteria. Treatment decisions are based on T-score combined with FRAX fracture risk assessment.

Should uric acid be tested during a gout attack?

A: No — serum uric acid can be falsely normal or low during an acute gout attack due to urate redistribution. Testing 4–6 weeks after the acute attack resolves gives the accurate baseline for urate-lowering therapy decisions.

What is the best method for Vitamin D testing?

A: LC-MS/MS (Liquid Chromatography-Mass Spectrometry) is the gold standard for 25-OH Vitamin D — it accurately measures both D2 and D3 forms. Many immunoassay platforms underestimate Vitamin D in Indian patients with low baseline levels.

What does a positive ANA test mean?

A: ANA (Antinuclear Antibody) positivity alone does not diagnose any specific disease — it requires pattern and titre reporting, along with specific antibodies (anti-dsDNA, anti-Sm) for diagnosis of Lupus, Sjogren's, or MCTD. Context and clinical correlation are essential.