Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Precision and accuracy assessment of DTG QC samples prepared at mid QC level with multiple ratios of hair mass:extraction solvent volume
| Hair Mass | Solvent Added | Ratio (Hair:Solvent) | Target Conc | Mean Conc | % Bias | %CV |
|---|---|---|---|---|---|---|
| 5 mg | 5 mL | 1:1 | 300 pg/mL | 270 pg/mL | −10.1 | 3.6 |
| 10 mg | 5 mL | 2:1 | 300 pg/mL | 332 pg/mL | 10.6 | 5.8 |
| 25 mg | 5 mL | 5:1 | 300 pg/mL | 282 pg/mL | −6.0 | 5.5 |
| 50 mg | 5 mL | 10:1 | 300 pg/mL | 334 pg/mL | 11.4 | 4.7 |
