Is it permissible to use the restroom before the morning hand washing?

Hello,

According to the letter of the law, it is permissible to relieve oneself before washing hands in the morning, and one should be careful not to touch the openings of the body. Nonetheless, if there is no urgent need to go, it is advisable to be strict and wash hands before using the restroom without reciting a blessing, and after exiting, to wash hands again and recite the blessing for hand washing and Asher Yatzar.

Sources: See Halacha Berurah, Part 1 (Siman 4, Section 4).

Best regards,

Hillel Meirs