Analyte sensors comprising leveling agents

An analyte sensor comprising:

• a first portion configured to be positioned above a user's skin;
• a second portion configured to be transcutaneously positioned through the user's skin and in contact with the user's bodily fluid to detect an analyte in the bodily fluid in vivo;
• the first portion comprising:
• a sensing layer disposed on a first working electrode, the sensing layer comprising a polymeric electron transfer agent to transfer electrons between the analyte and the first working electrode;
• and
• a membrane disposed over at least a portion of the sensing layer, the membrane comprising up to about 1% by weight of a modified polysiloxane.

A method for monitoring a level of an analyte, the method comprising:

• collecting data from an analyte sensor, the data correlating to a level of analyte from signals generated by the analyte sensor,
• wherein the analyte sensor comprises:
• a first portion configured to be positioned above a user's skin;
• a second portion configured to be transcutaneously positioned through the user's skin and in contact with the user's bodily fluid to detect an analyte in the bodily fluid in vivo;
• the first portion comprising:
• a sensing layer disposed on a first working electrode, the sensing layer comprising a polymeric electron transfer agent to transfer electrons between the analyte and the first working electrode;
• and
• a membrane disposed over at least a portion of the sensing layer, the membrane comprising up to about 1% by weight of a modified polysiloxane.