---
title: "Why are there no peaks in my Bioanalyzer/TapeStation results?"
slug: "why-are-there-no-peaks-in-my-bioanalyzer-tapestation-results"
updated: 2024-09-20T20:31:47Z
published: 2024-09-20T20:31:47Z
canonical: "support.epicypher.com/why-are-there-no-peaks-in-my-bioanalyzer-tapestation-results"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://support.epicypher.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Why are there no peaks in my Bioanalyzer/TapeStation results?

> [!NOTE]
> **If you see no peaks, make sure you are analyzing sequencing libraries and NOT raw CUT&RUN yields.**
> 
> - Remember, Bioanalyzer/TapeStation analysis is only to be conducted on prepared sequencing libraries and **NOT** raw CUT&RUN DNA.
> - If you are analyzing sequencing libraries, read below.

Potential reasons for no peaks in fragment distribution traces for sequencing libraries include:

- Low CUT&RUN yields and/or low inputs for library prep. See [this article](/v1/docs/cut-and-run-library-prep-low-yields) for guidance and troubleshooting tips.
- Sub-optimal library prep technique. Use the [EpiCypher CUTANA™ CUT&RUN Library Prep Kit](https://www.epicypher.com/products/epigenetics-reagents-and-assays/cutana-cut-and-run-library-prep-kit) (EpiCypher 14-1001 & 14-1002), specifically developed for CUT&RUN.