nanogram
One billionth gram
A nanogram is one billionth of a gram—an almost inconceivably small unit of mass.
The measurement appears in scientific contexts where minute quantities matter: drug dosages, hormone levels, trace contaminants.
The test detected nanograms of pesticide residue per liter of water.
Abbreviated ng.
Millionth of a gram
- milligramOne-thousandth gram
- centigramMetric mass fraction
- decigramMetric unit, gram's tenth
- megagramThousand-kilogram mass unit
tonne · grain · carat · ounce · pound · metric · unit · conversion
Degree of correctness
- sensitivityResponsiveness to stimuli
- calibrationAdjusting for measurement accuracy
- exactitudePerfect correctness in detail
- specificityExactness of detail
resolution · tolerance · fine-tuning · instrumentation · microbalance · quantification
Technique separating mixtures by differential migration
- assayCompositional evaluation procedure
- sampleSubset for study
- analyteSubstance being measured
- detectionAct of finding something
biomarker · pharmacokinetics · toxicology · forensics · doping · contamination · dosage
Hereditary code molecule
- proteinFolded amino chain
- moleculeBonded atomic group
- hormoneBody's chemical messenger
- enzymeProtein that hastens reactions
peptide · antibody · receptor · neurotransmitter · metabolite · cellular · biochemistry · genomics
microgram
Millionth of a gram
megagram · tonne · grain · carat · ounce · pound · metric · unit · conversion · scale
accuracy
Degree of correctness
- sensitivityResponsiveness to stimuli
- calibrationAdjusting for measurement accuracy
- exactitudePerfect correctness in detail
specificity · resolution · tolerance · fine-tuning · instrumentation · microbalance · quantification
chromatography
Technique separating mixtures by differential migration
detection · biomarker · pharmacokinetics · toxicology · forensics · doping · contamination · dosage
DNA
Hereditary code molecule
enzyme · peptide · antibody · receptor · neurotransmitter · metabolite · cellular · biochemistry · genomics · microscale
- measurementscales, gauging, balance, metering, measuring cup
- unitsunit, angstrom, yard, meter, base units
- weightsounce, pound, ton, milligram, microgram
- small amountsbit, drop, hint, dash, pinch
- Gramskg, milligram, mg, microgram, centigram
- tiny unitsmicrogram, micrometer, microliter, microsecond, milligram