A normal range for blood urea nitrogen is generally 8 to 24 mg/dL for adult men (2.86 to 8.57 mmol/L) and 6 to 21 mg/dL (2.14 to 7.50 mmol/L) for adult women. However, urea nitrogen levels vary by age. Infants have lower levels than other people do.
Fortunately, freezing zucchini and other summer squash is a snap: All you do is cut it into half-inch slices, blanch it in a pot of boiling water for three minutes, transfer it to a bowl of ice water to cool, drain it, and bag it.
More good news: It does fine whether frozen raw or cooked. And the fact that yours has been cut into small chunks is no problem. You can freeze raw butternut squash pieces in the same way you would freeze berries: Place them on a baking sheet, spaced out so they donât touch each other, and freeze until very firm. Then gather them in a freezer container, leaving room for possible expansion. Freeze until needed.