---
title: What cell seeding density should I use?
description: "The final cell concentration can be optimized based on different cell types. We recommend preparing cell suspension at the following concentration: - 3D cell cultures: - **For Ready-to-use hydrogels:** 1-2 x 10^6 cells/mL (the cell suspension needs to mix with…"
url: "https://www.thewellbio.com/docs/what-cell-seeding-density-should-i-use/"
updated: "2024-10-21"
category: Hydrogel / Cell Preparation
tags:
  - 2D Coating
  - 3D Culture
---

# What cell seeding density should I use?

The final cell concentration can be optimized based on different cell types. We recommend preparing cell suspension at the following concentration:

- 3D cell cultures:
  - **For Ready-to-use hydrogels:**  1-2 x 10^6 cells/mL (the cell suspension needs to mix with VitroGel® solution at the 2:1 ratio (VitroGel® solution: Cell suspension at 2:1 v/v), which makes the final cell concentration in the hydrogel  0.5-1 x 10^5 cells/mL)
  - **For the High-Concentration hydrogels**: 0.5-2 x 10^6 cells/mL (the cell suspension needs to mix with VitroGel® solution at the 4:1 ratio (VitroGel® solution: Cell suspension at 4:1 v/v), which makes the final cell concentration in the hydrogel  1-4 x 10^5 cells/mL)
- 2D hydrogel coating: 1-5 x 10^5 cells/mL