Common reasons include chronic sinusitis, nasal polyps, blocked sinus passages, and recurrent sinus infections that do not respond to other treatments.

Surgery is needed when a hernia causes pain, discomfort, or complications like strangulation, where blood supply to the tissue is cut off.

The test measures the concentration of magnesium in the blood to assess overall magnesium status.

No, fasting is not typically required for this test.

Causes include poor dietary intake, gastrointestinal disorders, renal issues, and certain medications.

Yes, high levels can be harmful, often due to excessive supplementation or renal failure, and need medical evaluation.

A blood sample is taken from a vein, usually in the arm, and analyzed in a laboratory.