Convert Nanograms to Apothecary Drams
Convert Nanograms (ng) to Apothecary Drams (dr ap) instantly and accurately.
Conversion Formula
dr ap = ng × 2.572059725e-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 Apothecary Drams
An apothecary dram (dr ap) equals 3 scruples or 60 grains - approximately 3.888 grams. Part of the traditional apothecary system used by physicians and pharmacists from the Middle Ages through the 19th century, it was the standard unit for prescribing and dispensing medicines. Prescriptions written in the apothecary system used special symbols: the dram symbol (℈) and ounce symbol (℥) appear throughout historical medical records and old pharmacy ledgers. The apothecary dram differs from the fluid dram (a volume unit) and from the avoirdupois dram.
Quick Reference Table
| Nanograms (ng) | Apothecary Drams (dr ap) |
|---|---|
| 1 ng | 2.572 × 10-10 dr ap |
| 2 ng | 5.144 × 10-10 dr ap |
| 5 ng | 1.286 × 10-9 dr ap |
| 10 ng | 2.572 × 10-9 dr ap |
| 25 ng | 6.43 × 10-9 dr ap |
| 50 ng | 1.286 × 10-8 dr ap |
| 100 ng | 2.572 × 10-8 dr ap |