Safety
Route

SQ

Subcutaneous

High risk

Risk

Can be mistaken for "5Q" (every 5 hours) or "SL"

Safer Alternative

Write "SUBQ" or "subcutaneous"

Example

SQ misread as 5Q

Sources

https://online.ecri.org/hubfs/ISMP/Resources/ISMP_ErrorProneAbbreviation_List.pdf