---
title: What if I cannot fill all four circles on the card?
description: Learn what to do if you cannot fill all four circles on your GlycanAge blood collection card and how to avoid affecting sample quality.
---

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# What if I cannot fill all four circles on the card?

First, try warming your hands, waiting for larger drops of blood to form, and using the spare lancets included in your kit if the flow stops too soon. Avoid squeezing or “milking” the finger too aggressively, as this can affect the quality of the sample. If you still cannot fill all four circles properly, please contact us at support@glycanage.com before sending the sample back.

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