In a pregnancy ultrasound, the crown rump length can help calculate gestational age and can tell a lot about the baby's health. In a pregnancy ultrasound, the crown rump length can help calculate gestational age and can tell a lot about the baby's health. Menu Crown Rump Length (CRL) From the Ultrasound
1 Raw Red Meat(Beef): Refreezeable if itâs still very cold even without ice crystal, but it needs to be below 40F the whole time and have only been fully thawed for a day or two. If itâs gone above 40F toss it.  Raw Poultry or Chicken, Pork and Lamb: Refreezing is OK if itâs still icy or very cold.
If you plan to cook the ground beef immediately, you can thaw it in your microwave or in watertight packaging under cold running water. However, if you want the option of refreezing your beef the only safe method is to thaw it in your refrigerator. A refrigerator's whole purpose is to keep your ingredients at a food safe temperature of 40 degrees Fahrenheit or below, which slows bacterial growth. If you thaw your beef overnight in the fridge it never reaches a dangerous temperature, and can be refrozen at need.