Standard Operating Procedure: IVF Laboratory Operations

This Standard Operating Procedure (SOP) serves as the primary operational framework for the In Vitro Fertilization (IVF) laboratory. Its objective is to ensure the highest standards of gamete and embryo handling, environmental stability, and clinical safety. Adherence to these protocols is mandatory for all embryology staff to minimize clinical risk, maintain chain of custody, and optimize laboratory success rates. Deviation from these procedures requires formal authorization from the Laboratory Director.

Section 1: Facility Access and Cleanroom Protocols

• Controlled Access: Entry is restricted to authorized personnel only. Swipe badge access logs are audited weekly.
• Personal Protective Equipment (PPE): All staff must don dedicated scrubs, shoe covers, bouffant caps, and surgical masks before entering the anteroom.
• Hand Hygiene: Perform a full surgical scrub using approved antimicrobial soap up to the elbows for 3 minutes before donning sterile powder-free, protein-free gloves.
• Gowning: Sterile gowning is required for all invasive embryological procedures (ICSI, biopsy, vitrification).

Section 2: Equipment Calibration and Environmental Monitoring

• Incubator Maintenance: Check CO2/O2 levels and temperature daily at 07:00. Log readings in the digital monitoring system.
• VOC Monitoring: Ensure air filtration systems (HEPA/Carbon) are active. Check pressure differentials between the lab and anteroom daily.
• Workstation Setup: Wipe down the laminar flow hood or IVF workstation with non-toxic, embryotoxicity-tested disinfectant. Check heated stages (set to 37°C) before procedure start.
• Microscope Check: Verify laser alignment and optical clarity before performing micromanipulation.

Section 3: Gamete Handling and Chain of Custody

• Double-Witness Policy: Two staff members must verify patient identifiers (Name, DOB, MRN) at every stage of gamete/embryo handling (collection, fertilization, vitrification, transfer).
• Verification Log: Sign off on the Electronic Witnessing System (EWS) for every transfer between dishes or incubators.
• Temperature Control: Keep all gametes on a heated surface (37°C) at all times; minimize exposure to ambient air during manipulation.
• Labeling: All culture dishes must be labeled with patient identifiers, date, and specific procedure type using waterproof, toxicity-tested markers.

Section 4: Cryopreservation and Storage

• Vitrification: Ensure liquid nitrogen (LN2) levels in storage dewars are within the safe operating range (top-up weekly).
• Inventory Reconciliation: Perform a monthly physical inventory check against the electronic database to ensure 100% alignment of cryostored assets.
• Alarm Testing: Conduct monthly alarm tests for all LN2 tanks and incubators to ensure remote monitoring alerts are functional.

Pro Tips & Pitfalls

• Pro Tip: Always prepare your culture dishes/media 24 hours in advance to allow for proper equilibration of pH and temperature.
• Pro Tip: Treat every drop of media as if it contains the patient’s only embryo; never rush the cleaning or denuding process.
• Pitfall: Avoid "routine complacency." Always perform the double-witness check out loud. Silence is the precursor to a labeling error.
• Pitfall: Do not ignore minor drifts in temperature or CO2. A 0.5% fluctuation can significantly impact blastocyst development rates.

Frequently Asked Questions (FAQ)

1. How often should incubator gas tanks be rotated? Tanks should be rotated when they reach 500 PSI to ensure constant supply and prevent particulate contamination from entering the gas line.

2. What is the protocol for a power failure? Immediately secure all incubator doors to maintain thermal mass. Switch to the Uninterruptible Power Supply (UPS) and, if the outage exceeds 30 minutes, initiate the emergency transport protocol to a pre-vetted backup facility.

3. When should gloves be changed during a procedure? Gloves must be changed every 30 minutes or immediately if they touch any non-sterile surface (e.g., telephone, door handle, or face). Always use only nitrile, powder-free gloves.