Based on the information provided, I was unable to find a specific recommendation for how frequently liver tests should be conducted during the use of Tigecycline. However, it is generally recommended to monitor liver function tests when using Tigecycline [1].

Tigecycline is a broad-spectrum antibiotic that is used to treat a variety of bacterial infections. Like many other antibiotics, Tigecycline can have an impact on liver function [1]. Therefore, it is important for healthcare providers to monitor liver function tests during treatment to ensure that the drug is not causing any adverse effects.

The frequency of liver function tests during Tigecycline treatment will depend on various factors, such as the patient's medical history, the dosage of Tigecycline being used, and the length of treatment [1]. Healthcare providers will typically use their clinical judgment to determine the appropriate frequency of testing for each individual patient.

In summary, while there is no specific recommendation for how frequently liver tests should be conducted during Tigecycline use, it is generally recommended to monitor liver function tests during treatment. The frequency of testing will depend on various factors and will be determined by the healthcare provider.

Sources:

* [1] DrugPatentWatch.com. Tigecycline. <https://www.drugpatentwatch.com/drugs/tigecycline>