ADC generates power consumption after stm32L4 enters stop mode

[AlfRomeo]

I use STM32L431 to enter STOP1 mode, the original power consumption is 53uA. Before entering stop mode, I call HAL_ADC_DeInit(&hadc1) to disable ADC, and call MX_ADC1_Init() to re-enable ADC after exiting STOP1 mode. The measured power consumption is 66uA, which is about 10uA more. Why? If I do not call MX_ADC1_Init() after exiting STOP1 mode, the power consumption is still 53uA. Is it because ADC will generate power consumption?

Below is my code to enter and exit STOP1：

void EnterStop2ModeRTC(void)
{
  HAL_RCCEx_WakeUpStopCLKConfig(RCC_STOP_WAKEUPCLOCK_MSI);
  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
  __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&hrtc, RTC_FLAG_WUTF);
  __HAL_RTC_WAKEUPTIMER_EXTI_CLEAR_FLAG();
  __HAL_RTC_TIMESTAMP_CLEAR_FLAG(&hrtc, RTC_FLAG_TSF);
  __HAL_RTC_TAMPER_TIMESTAMP_EXTI_CLEAR_FLAG();
  HAL_ADC_DeInit(&hadc1);
  HAL_SuspendTick();
  // __HAL_RCC_DMA1_CLK_DISABLE();
  cpuStopFlg = true;
  SCB->SCR |= SCB_SCR_SLEEPONEXIT_Msk;
  __HAL_RCC_PWR_CLK_ENABLE();
  HAL_PWREx_EnterSTOP1Mode(PWR_STOPENTRY_WFI); 
}

void ExitStop2ModeRTC(void)
{
  SystemClock_Config();
  HAL_ResumeTick();
  MX_ADC1_Init();
  cpuStopFlg = false;
}