Laboratory reference ranges reflect methods, populations, and policies, and experienced clinicians interpret them in context rather than applying fixed cutoffs theoretically.

There are no official numbers for the optimal levels of testosterone, but certain medical laboratories use the following reference values for typical total serum testosterone, measured in nanograms ...

Kidney function tests in the normal range can still signal risk if low for age and sex A Swedish study analyzed over 1.1 million adults using age- and sex-specific eGFR charts Adults below the 25th ...

From the air to our blood ...

The number doctors use to demarcate hypertension keeps going down, a trend applauded by many experts, who point to studies ...

The sudden tariff announcement caught Arup Rakshit, Group Head Treasury at HDFC Bank, off guard, but the rupee’s appreciation did not. In a conversation with Christina Titus and Mahesh Nayak, Rakshit ...

Polo Rocha has written about economics and banking for a decade. Chip Somodevilla / Getty Images The Federal Reserve’s decision on whether to cut interest rates again depends heavily on the uncertain ...

State volcanologists have lowered Bulusan Volcano’s alert status from Level 1 (low-level unrest) to Level 0 (normal) on Friday, Feb. 6, 2026, after monitoring data showed a continued decline in ...

Oxygen is critical to life. When levels of oxygen change, it can have immediate and lasting impacts on a person's health.

ILOILO CITY — Major irrigation dams in Aklan and Capiz remained within normal operating levels as of 3 p.m. on Tuesday, February 10, even as a shear line continues to affect Western Visayas, bringing ...