Objective: To establish the quality standards of Panacis Ginseng Radix Laterlis. Method: This experiment collected the Panacis Ginseng Radix Laterlis from different areas

which is to observe the characters

identify the quality by microscopy and TLC

examine the total ash

make the content determination by HPLC. Result: The appearance of 10 batches of samples was different when micro-characteristic were clear. The TLC spots of samples have the same color with Ginseng Radix et Rhizoma

ginsenoside Rb1

Re

Rf

Rg1. however

the total ash was 2.50%-4.26%. ginsenoside Rg1

Re

Rb1 has a good linearity within 0.117 -1.750 μg

0.207 -3.100 μg

0.298 -4.470 μg and the average recovery was 94.4%

95.2%

95.7%with RSD 1.99%

1.55%

1.54%. The content of ginsenoside Rg1+ Re in 10 batchs of samples is 0.228%-0.666%

and the content of ginsenoside Rb1 is 0.312%-0.783%. Conclusion: The quality of Panacis Ginseng Radix Laterlis from different areas is considerably different to be established urgently.