Skip to main content

Table 1 Carnitine ester concentrations of serum and follicular fluids μmol/L [median (interquartile range)]

From: Acylcarnitine esters profiling of serum and follicular fluid in patients undergoing in vitro fertilization

Analytes IVF patients Controls
Serum Follicular fluid Serum
  Median (IQR) N=42 Median (IQR) N=42 Median (IQR) N=18
free carnitine 28.056 (5.358) 27.880 (5.878) 27.416 (5.664)
Total acyl-carnitine 9.088 (1.727) 7.613 (1.887) 8.193 (1.413)
Total carnitine 36.309 (6.382) 35.895 (7.780) 36.298 (5.294)
AC/FC ratio 0.320 (0.079) 0.279 (0.049) 0.294 (0.071)
Total short-chain acylcarnitines 7.827 (1.505) 7.073 (1.760) 7.055 (1.500)
Total medium-chain acylcarnitine 0.688 (0.249) 0.307 (0.103) # 0.600 (0.228)
Total long-chain acylcarnitine 0.343 (0.069) 0.140 (0.033) # 0.338 (0.110)
Short chain acylcarnitines  
  C2-carnitine 7.470 (1.300) 6.559 (1.740) 6.504 (1.514)
  C3-carnitine 0.183 (0.073)* 0.204 (0.068) # 0.263 (0.090)
  C4-carnitine 0.143 (0.058)* 0.160 (0.073) 0.180 (0.088)
  C5-carnitine 0.053 (0.027) 0.052 (0.013) 0.050 (0.020)
  C5-OH carnitine 0.025 (0.012)* 0.020 (0.007) # 0.033 (0.014)
Medium chain acylcarnitines  
  C6-carnitine 0.027 (0.010) 0.020 (0.007) # 0.027 (0.007)
  C8-carnitine 0.098 (0.043) 0.053 (0.024) # 0.097 (0.0459
  C8:1-carnitine 0.037 (0.020) 0.030 (0.020) 0.038 (0.016)
  C10-carnitine 0.215 (0.120) 0.070 (0.029) # 0.187 (0.087)
  C10:1-carnitine 0.154 (0.061) 0.070 (0.030) # 0.150 (0.040)
  C12-carnitine 0.057 (0.023) 0.020 (0.006) # 0.050 (0.023)
  C12:1-carnitine 0.066 (0.021) 0.020 (0.010) # 0.063 (0.019)
Long chain acylcarnitines  
  C14-carnitine 0.023 (0.007) 0.010 (0.003) # 0.022 (0.011)
  C14:1-carnitine 0.053 (0.026)* 0.020 (0.007) # 0.045 (0.016)
  C16-carnitine 0.087 (0.029) 0.040 (0.013) # 0.092 (0.039)
  C18-carnitine 0.032 (0.013) 0.013 (0.007) # 0.037 (0.010)
  C18:1-carnitine 0.092 (0.032) 0.033 (0.013) # 0.080 (0.032)
  C18:2-carnitine 0.053 (0.020) 0.020 (0.007) # 0.055 (0.027)
Dicarboxylic acylcarnitines    
  C4DC-carnitine 0.030 (0.013) 0.023 (0.010) # 0.028 (0.005)
  C5DC-carnitine 0.086 (0.040) 0.052 (0.017) # 0.082 (0.025)
  1. In the control group no follicular samples were avaiable.
  2. *p<0.05 compared to control.
  3. # p<0.05 compared to control.