Question 1

What ESR level is concerning?

Accepted Answer

It depends on age and sex, but results well above the age-adjusted limit, and especially above 100 mm/hr, need a search for the cause. A mildly high ESR without symptoms is common and is often simply rechecked.

Question 2

Can a high ESR be normal?

Accepted Answer

Yes. ESR is higher with age, in women, during pregnancy and with anemia. A mild rise may have no significant cause, which is why it is read together with your symptoms and other tests.

Question 3

Is ESR or CRP better?

Accepted Answer

Neither is better overall. CRP responds faster and is less affected by other factors, so it is often preferred for infection. ESR remains useful for some inflammatory conditions. Many clinicians order both.

Question 4

Can ESR detect cancer?

Accepted Answer

ESR is not a cancer test. Some cancers raise it, but most high results have other causes, and a normal ESR does not rule cancer out.