# Filtering features

Low expression genes may be indistinguishable from noise and will decrease the sensitivity of differential expression analysis.

* Click the **Gene counts** node
* Click **Filtering** in the task menu
* Click **Filter features** (Figure 1)

<figure><img src="/files/Pvu8j2GIKqoBamAUnax8" alt=""><figcaption><p><em>Figure 1. Selecting Filter features</em></p></figcaption></figure>

* Click **Noise reduction filter**
* Set the filter to **maximum <= 1**
* Click **Finish** (Figure 2)

<figure><img src="/files/CBFAvyoGs9N66fEHnry3" alt=""><figcaption><p><em>Figure 2. Filtering low expressed genes</em></p></figcaption></figure>

A new Filtered counts data node will be created to que additional tasks (Figure 3) like Normalization.

<figure><img src="/files/xnGdAYvRaSl3GJTjxs92" alt=""><figcaption><p><em>Figure 3. Filtered counts node</em></p></figcaption></figure>

## Additional Assistance

If you need additional assistance, please visit [our support page](http://www.partek.com/support) to submit a help ticket or find phone numbers for regional support.


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