Convert Avoirdupois Drams to Nanograms
Convert Avoirdupois Drams (dr av) to Nanograms (ng) instantly and accurately.
Conversion Formula
ng = dr av × 1771845195
About Avoirdupois Drams
An avoirdupois dram (dr av) is 1/16 of an avoirdupois ounce - approximately 1.772 grams. Part of the avoirdupois system that governs everyday trade weights in the UK and US, it was historically used to measure small quantities of goods and spices in commerce. While rarely used in modern commerce (having been replaced by grams in most applications), the avoirdupois dram still appears in some spice and herbalist contexts, in US gunpowder loading data (where charges are specified in grains and drams), and in archaic recipe books.
About Nanograms
A nanogram (ng) is one billionth of a gram (10⁻⁹ g). This is the standard mass unit in analytical chemistry, pharmacology, and toxicology for detecting trace substances. Blood plasma concentrations of hormones, drugs, and environmental contaminants are routinely reported in nanograms per milliliter (ng/mL). A typical therapeutic blood level for many medications is in the range of 10-500 ng/mL. In forensic science, nanogram-level DNA quantities can be amplified by PCR to yield a full genetic profile.
Quick Reference Table
| Avoirdupois Drams (dr av) | Nanograms (ng) |
|---|---|
| 1 dr av | 1.772 × 109 ng |
| 2 dr av | 3.544 × 109 ng |
| 5 dr av | 8.859 × 109 ng |
| 10 dr av | 1.772 × 1010 ng |
| 25 dr av | 4.43 × 1010 ng |
| 50 dr av | 8.859 × 1010 ng |
| 100 dr av | 1.772 × 1011 ng |