Higher than normal blood ammonia levels are called hyperammonemia. Acceptable levels depend on age and sex but range from about 42 µg/dL in infants to 200 µg/dL adults assigned male at birth.

Spotting before your period is generally harmless. It may be an indicator of pregnancy or due to ovulation, perimenopause, polyps, or another health condition. Spotting is light vaginal bleeding ...

Demographic differences in expected NT-proBNP (N-terminal pro-B-type natriuretic peptide) concentration are not well established. We aimed to establish reference ranges for NT-proBNP and explore the ...

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