Eighty-Four Hours Later: Adolescent Assent, Guardian Consent, and What Evidence Still Exists
At 2:15 a.m., a 16-year-old girl arrives at a community ED with her aunt. Her mother, the legal guardian, is traveling out of state and has been reached once by phone but is now unreachable. The teen reports that 84 hours ago she was assaulted by a 22-year-old acquaintance in his apartment. She has showered three times since, brushed her teeth, and laundered nothing - her underwear and leggings are in a plastic grocery bag she brought from home. She has no visible injuries, declines a speculum or internal exam, and says she will talk to "a counselor, not the cops." She wants the evidence collected "in case I change my mind." Hospital policy offers a SANE; state law mandates reporting of suspected child sexual abuse. The nearest SANE is 45 minutes away, and the aunt asks whether they can just go home and come back tomorrow.
1. What is still worth collecting at 84 hours, and how does the delay change your specimen plan?
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Timing frame: many programs collect body-surface evidence up to 120 hours, so at 84 hours she is still within most protocols, but yield is lower and the plan changes. Skin swabs of the neck, breasts, thighs, and any area she names (three showers reduce, but do not eliminate, transfer DNA). Fingernail swabs. Oral swabs are lower yield after 24–48 hours; follow the local kit guidance and document the delay rather than skip silently. Her unlaundered clothing is the highest-value evidence - collect the underwear and leggings, and transfer them from plastic into paper to stop moisture-driven degradation. Urine for drug-facilitated assault testing remains useful to roughly 96–120 hours; blood is only useful within about 24 hours, so not here unless other indications exist. Document why each specimen was or was not collected, and re-offer the internal exam later - a refusal now is not permanent.
2. Who can authorize the forensic exam, and what must happen about reporting?
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Consent: the aunt is not the legal guardian and cannot authorize a forensic exam. Either reach the mother for consent or rely on the state's minor-consent law for sexual assault and STI care, which in most states lets an adolescent consent to her own treatment. Emergency doctrine does not apply - this is not immediately life-threatening. Document every attempt to reach the mother with times and numbers, and involve hospital legal and administration plus the on-call SANE.
Reporting: suspected sexual abuse of a 16-year-old is reportable to child protective services and/or law enforcement in every U.S. state regardless of her wishes, and the alleged assailant is an adult. Tell her honestly who will be contacted and why; being surprised by an investigator damages trust more than the report itself.
Medical care should not wait on any of this: STI prophylaxis, hepatitis B, pregnancy testing and emergency contraception. HIV non-occupational PEP is generally recommended within 72 hours, so at 84 hours that window has closed - discuss with HIV/ID per local guidance rather than defaulting either way, and document the reasoning.
3. The kit is complete and she has not reported to police. Walk through the chain-of-custody handling.
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Per item: air-dry swabs before packaging, place clothing in paper (the plastic grocery bag must be exchanged for paper - log that transfer as an action you performed), and seal each container with tamper-evident tape. Label with patient identifier, date/time, collector, and specimen site, then initial across the seal. Do not staple through evidence.
Storage: refrigerate swabs and liquid blood per policy, keep clothing dry at room temperature, and log every movement with date, time, and signatures. Because she has not reported, the kit goes into the locked evidence refrigerator with a documented location and a retention rule, and is released only to a law-enforcement agency on a documented request - never to a family member, including the well-intentioned aunt. If she or the aunt asks to take the clothing home, explain the chain-of-custody consequence plainly.
Also document: no visible injuries on examination, the declined internal exam, photographs if she consents, her exact account, and the fact that her clothing was collected and repackaged.