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.
So hereâs how to freeze zucchini, in four simple steps. 1  Step 1: Rinse the zucchini thoroughly. 2  Step 2: Shred the zucchini. 3  Step 3: Mark a freezer bag with the date and contents, then fill it with enough zucchini to make your bread recipe.  Step 4: Remove as much air as possible from the bag, seal, flatten, and freeze.