In-depth guide

UPDATED FEB 2026

NEC Evidence and Records: What to Gather and Why It Matters

Part of the NEC Baby Formula (Similac/Enfamil) investigation

The short answer

Building a successful NEC formula case requires three categories of records: (1) NICU feeding logs documenting formula product and volume; (2) diagnostic records confirming the NEC diagnosis; and (3) long-term medical records documenting the lasting harm. You do not need these records before contacting an attorney — your attorney can obtain them for you — but understanding what is needed helps families gather and preserve evidence.

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NICU Feeding Logs: The Most Critical Document

The single most important evidentiary document in a NEC formula case is the NICU nursing flowsheet — also called the nursing notes, intake/output record, or feeding log. These records are created by NICU nurses at each shift and document every feeding: what was administered (mother's own milk, donor breast milk, or formula — with the specific product name, brand, and caloric density), in what volume, by what route (nasogastric tube or bottle), and at what time. These records establish that cow's milk-based formula was administered to your baby — the foundational fact of the lawsuit. They also document whether mother's own milk or donor breast milk was available and to what extent, which is relevant to causation and the hospital's role. NICU flowsheets are typically retained as part of the medical record. Hospitals are required to retain pediatric medical records for extended periods — often 10 years from birth or from the last date of treatment in that facility, with some states requiring longer retention. Your attorney will request these records through a HIPAA authorization.

Diagnostic Records That Prove NEC

To establish a NEC diagnosis for legal purposes, your attorney will obtain: radiology reports and images from abdominal X-rays showing pneumatosis intestinalis, portal venous gas, or free air; ultrasound reports if abdominal ultrasound was performed for NEC evaluation; neonatology and surgical progress notes documenting the clinical decision to diagnose and treat NEC; laboratory results showing metabolic acidosis, thrombocytopenia, and elevated inflammatory markers (CRP, CBC) consistent with NEC; operative reports from any emergency bowel surgery, including the specific bowel segments resected and the length removed; and pathology reports from any resected bowel confirming intestinal necrosis histologically. This multi-source documentation is important because NEC exists on a clinical spectrum and defendants may argue that a diagnosis was not established — comprehensive records foreclose this defense.

Long-Term Medical Records Documenting the Lasting Harm

For surviving children with ongoing harm, the attorney and expert witnesses will need comprehensive post-discharge records: pediatric gastroenterology and intestinal rehabilitation records documenting Short Bowel Syndrome management, PN prescriptions, and enteral feeding protocols; records of central line placements and infections; liver function tests and imaging related to intestinal failure-associated liver disease; developmental pediatrics and neuropsychology evaluations documenting cognitive, language, and motor delays; therapy records from physical, occupational, and speech therapy; school records including IEPs and special education evaluations; and any records from pediatric neurology regarding cerebral palsy or seizure disorders. Life care planners retained by your attorney will review these records to project future medical and care costs over the child's lifetime — often the largest component of damages in severe cases.

Key data

Data & Statistics

2 SOURCED FIGURES

10 years

State medical record retention statutes

3 categories

NEC MDL plaintiffs' discovery practice

FAQ

Frequently Asked Questions

12 QUESTIONS

Necrotizing Enterocolitis (NEC) is a life-threatening inflammatory disease of the intestines that primarily strikes premature and low-birthweight infants in the Neonatal Intensive Care Unit. In NEC, bacteria invade the immature intestinal wall, causing progressive tissue death (necrosis), which can lead to bowel perforation, bacterial sepsis, and multi-organ failure. NEC kills approximately 15,000 premature infants in the United States each year and is the leading cause of death from gastrointestinal disease in the NICU. Survivors often face lifelong consequences including Short Bowel Syndrome, TPN dependency, and neurodevelopmental disabilities.

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The full investigation

Part of the NEC Baby Formula (Similac/Enfamil) Investigation