Does a pinprick during a blood sugar test break your wudu?
In the Name of Allah, the Most Merciful and Compassionate
The needle-prick of a blood sugar test breaks the wudu if the blood came out with such strength that it actually or effectively flows. [Shurunbulali, Maraqi al-Falah]
Actual flowing is when the blood moves from the point of exit to another place.
Effective flowing is when the blood’s movement was stopped by something however had that thing not stopped it, the blood would have actually flowed. [Ibid.]
Hope this helps
Allah knows best
[Shaykh] Yusuf Weltch
Checked and Approved by Shaykh Faraz Rabbani
Shaykh Yusuf Weltch is a graduate from Tarim; a student of Habib Umar and other luminaries; and authorized teachers of the Qur’an and the Islamic sciences