Pre-Fecalysis Nursing Interventions: Patient Prep, Collection & Documentation

Accurate stool analysis depends on proper pre-analytic nursing care. Key interventions:

1. Patient Education

• Explain test purpose (ova & parasites, C. diff, occult blood, culture, calprotectin, etc.).
• Emphasize: contamination invalidates results (urine, water, toilet paper, menstrual blood).

2. Dietary & Medication Guidance

• Follow provider orders: may restrict red meat, vitamin C, NSAIDs (for occult blood); laxatives, antacids, antibiotics (for culture/O&P).
• Hydration: maintain normal intake; dehydration alters consistency.
• Document all instructions given.

3. Container & Labeling

• Provide sterile, leak-proof container with spoon/spatula.
• Label: patient name, DOB, date/time of collection, test ordered.
• Include requisition form.

4. Collection Technique Instruction

1. Wash hands before/after.
2. Pass stool into clean bedpan/hat – NOT toilet water.
3. Transfer walnut-sized sample (≈15–20 g) using spoon; avoid touching inside container.
4. For O&P: fill to fill line (preservative vials: PVA, formalin).
5. For culture: Cary-Blair transport medium.
6. Seal tightly; wipe exterior.

5. Timing & Transport

• Deliver to lab ASAP (ideal <2 hrs for routine; <1 hr for C. diff toxin, WBCs).
• If delay: refrigerate (4°C) – NOT freeze. Max 24 hrs for most tests.
• O&P in preservative: room temp OK per manufacturer.

6. Infection Control

• Standard precautions: gloves, gown if splash risk.
• Hand hygiene reinforcement for patient and staff.

7. Documentation

• Date/time of education, dietary/med instructions, container provided.
• Any patient concerns or inability to comply.

Pre-analytic errors cause >70% of lab inaccuracies. Nursing diligence here directly impacts diagnostic yield.