SCP-113

Object Class: Safe

Special Containment Procedures: SCP-113 is to be kept in a standard storage locker at Site-23. Laboratory gloves must be worn when handling SCP-113. No living organisms are to be exposed to SCP-113 without prior approval. Personnel exposed to SCP-113 are to be kept under medical observation for seven days.

SCP-113 resembles a small piece of polished red jasper.

The gender transformation process occurs in the following four stages:

Stage 1: Duration approximately 0.2 seconds. SCP-113 bonds with the cells it touches and initiates an unidentified chemical mutation. This process causes tissue damage similar to a mild burn, and SCP-113 cannot be removed from the subject until all stages are complete.

Stage 2: Duration approximately 20 seconds. SCP-113 emits low-intensity electromagnetic waves that travel through the subject's body. The subject experiences nausea, vomiting, and a stinging sensation throughout the entire body.

Stage 3: Duration approximately 60 seconds. During this stage, the subject's cellular structure undergoes temporary transformation. Cellular changes range from forms unrecognizable as human to unique partially-differentiated stem cells. During the final 20 seconds of Stage 3, the subject experiences intense stimulation of all sensory nerves, describing the process as extremely painful. Subjects in poor health may die from shock during this stage.

At the conclusion of Stage 3, the subject's biological sex is permanently altered. In standard cases, the subject's biological sex is converted to the opposite sex. All primary and secondary sex characteristics change accordingly.

Stage 4: SCP-113 detaches from the subject and becomes inactive.

Subjects with sex chromosomes atypical for their species (e.g., intersex humans) are affected by SCP-113 in unpredictable ways. In human intersex subjects, gender identity appears to influence the outcome. Such subjects may remain unaffected, change into a standard male or female body (with corresponding chromosomal changes), or experience other results. The change usually aligns with the subject's gender identity, or at least partially aligns if the identity is non-standard. Investigation is ongoing into whether SCP-113 alters its effects based on the presence of a non-standard gender identity.

The gender identity of human subjects is generally not altered by SCP-113. For individuals with non-standard gender identities (mostly those whose pre-exposure biological sex did not match their identity), the physical changes usually result in positive psychological outcomes. Conversely, individuals with standard gender identities (males/females whose pre-exposure sex matched their identity) exhibit negative psychological reactions. This appears to be a natural psychological response rather than an anomalous effect of SCP-113.