What laundry detergent is best for urine odor?

Yes.

Any kind of laundry detergent is fine.

No, you don't have to use powdered detergent. You can use liquid detergent too, but powered detergent will make the process more efficient.

You can use a 3:1 water to vinegar mixture to wash the crystal.

Have it dry cleaned. That might help restore it.

Since you're washing a very small load that includes just one garment, use no more than 1/4 cup (59.14 mL) of a mild laundry detergent.

Any standard dishwashing liquid will work and shouldn't harm your baby.

I am assuming this means 'high,' as in blood was present at an amount higher than what is considered normal for that test.

You add both detergent and salt for best results. If your washer has a detergent area, you can add the detergent there, and the salt above the clothes.