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.
Added to a hearty winter soup, that zucchini heft and flavor might be just the ticket. And weâll be ready. Zucchini (and summer squash, for that matter) freezes well. With a little preparation up front, zucchini and squash can become a welcome âgo toâ for fall and winter cooking.