Convert Nanograms to Avoirdupois Drams
Convert Nanograms (ng) to Avoirdupois Drams (dr av) instantly and accurately.
Conversion Formula
dr av = ng × 5.643833912e-10
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.
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 While rarely used in modern commerce (having been replaced by grams in most applications), the avoirdupois dram still appears in some spice and herbalist contexts, in US gunpowder loading data (where charges are specified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.
Quick Reference Table
| Nanograms (ng) | Avoirdupois Drams (dr av) |
|---|---|
| 1 ng | 5.644 × 10-10 dr av |
| 2 ng | 1.129 × 10-9 dr av |
| 5 ng | 2.822 × 10-9 dr av |
| 10 ng | 5.644 × 10-9 dr av |
| 25 ng | 1.411 × 10-8 dr av |
| 50 ng | 2.822 × 10-8 dr av |
| 100 ng | 5.644 × 10-8 dr av |