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. 2022 Aug 11;10:961660. doi: 10.3389/fchem.2022.961660

TABLE 2.

Retention time, linearity, and sensitivity for each steroid.

Steroid Retention time (min) Linearity Sensitivity (ng/ml)
Range (ng/ml) Equation r 2 LoD (S/N ≥ 3) LLoQ (S/N ≥ 10)
Aldosterone 1.69 0.1–20 y = 0.9352x − 0.0133 0.9989 0.01 0.05
18OH coryicosterone 1.83 0.1–20 y = 0.0719x + 0.0031 0.9982 0.05 0.1
Cortisone 2.06 1.5–300 y = 0.0479x + 0.0082 0.9996 0.1 1.0
Cortisol 2.21 1.5–300 y = 0.0448x − 0.0078 0.9991 0.2 1.0
21-Deoxycortisol 2.79 0.1–20 y = 0.8178x + 0.0322 0.9967 0.05 0.1
Corticosterone 3.04 0.1–20 y = 0.6865x + 0.0066 0.9997 0.01 0.05
11-Deoxycortisol 3.19 0.1–20 y = 0.8070x + 0.0156 0.9996 0.01 0.05
Androstenedione 3.68 0.1–20 y = 0.2282x + 0.0027 0.9988 0.01 0.05
Deoxcorticosterone 3.98 0.1–20 y = 1.0350x + 0.0001 0.9996 0.01 0.05
Testosterone 4.05 0.1–20 y = 0.2941x − 0.0018 0.9998 0.01 0.05
Androstenediol 4.06 1.5–300 y = 0.0045x + 0.0087 0.9952 1.0 1.5
DHEA 4.38 15–3,000 y = 0.0004x + 0.0014 0.9995 4.0 15
17-OHP 4.40 0.1–20 y = 0.4351x + 0.0037 0.9995 0.01 0.05
17-hydroxy pregnenolone 4.45 1.5–300 y = 0.0068x + 0. 0034 0.9985 0.5 1.0
Dihydrotestosterone 5.36 0.1–20 y = 0.6425x − 0.0044 0.9995 0.01 0.05
Progesterone 5.51 0.25–50 y = 0.0307x + 0.0012 0.9995 0.02 0.1
Pregnenolone 5.57 0.25–50 y = 0.0374x + 0.0125 0.9991 0.2 1.0