What it means
A picogram is one trillionth of a gram. Results in pg/mL are used for substances found in tiny amounts in the blood, such as BNP (a heart failure marker) and vitamin B12. A result in pg/mL is the same number as one in ng/L.
At a glance
| Also written | picograms per milliliter |
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Related terms
cyanocobalamin
A form of vitamin B12 given by injection, nasal spray or mouth to treat or prevent B12 deficiency.