pISSN 2234-3806eISSN 2234-3814
Table. 1.
Analytical percentage recovery of added C-peptide for the ID-LC–MS/MS method
| Concentration | Added C-peptide, ng | Expected result, ng/g (pmol/L) | Mean detected result, ng/g (pmol/L) | Mean relative recovery, % | Relative recovery range, % | CV, % (N = 6) |
|---|---|---|---|---|---|---|
| 0 | - | 1.86 (619.0) | 1.86 (619.0) | - | - | - |
| 1 | 1.14 | 3.00 (1,000.0) | 3.01 (1,003.3) | 100.6 | 100.3 – 100.7 | 0.3 |
| 2 | 1.83 | 3.69 (1,230.0) | 3.72 (1,240.0) | 100.6 | 100.4 – 101.0 | 0.3 |
| 3 | 3.43 | 5.29 (1,763.3) | 5.28 (1,676.0) | 99.8 | 99.6 – 100.7 | 0.9 |
Abbreviation: ID-LC–MS/MS, isotope dilution liquid chromatography-tandem mass spectrometry.
Ann Lab Med 2023;43:345~354 https://doi.org/10.3343/alm.2023.43.4.345
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