It depends on the bag. Paper wrapped: no concern, if the turkey is fully cooked. Plastic, and the bag melted or changed: do not eat the giblets or the turkey. Plastic untouched: safe to use.
If the giblets were wrapped in paper, there is no concern, as long as the turkey is fully cooked to 165 F, measured with a food thermometer. Take the bag out now. The done check on the bird itself: A meat thermometer: 165 F in the thickest part of the breast, the innermost thigh, and the innermost wing. Color is not a reliable signal. If all three read 165 F, dinner goes ahead, and the 20 minute rest still applies.
If giblets were packed in a plastic bag, and the bag has been altered or melted by the cooking process, do not use the giblets or the poultry because harmful chemicals may have leached into the surrounding meat. If the plastic bag was not altered, the giblets and poultry should be safe to use. Look at the bag first. Melted, warped, or stuck to the meat is the hard answer. A bag that looks as it went in is the soft one, with the 165 F check as the proof.
A frozen bird keeps its packet locked in until the meat softens. Pull the giblet packet out with tongs once the bird has baked 20 to 30 minutes. For a thawed bird not yet in the oven: Remove the giblets from the turkey cavities after thawing. Cook separately. Check both cavities: the neck often rides in one, the bag in the other.
USDA's third safe way is the microwave: follow your oven manual for size and timing, and cook the turkey right after it thaws. Never thaw a turkey on the counter. The outside warms up hours before the inside thaws. Bacteria grow in that warm layer.
Tell the calculator your weight and dinner time. It stamps the thaw, the oven time, and the rest. Or ask in your own words: "16 lb turkey, dinner Thursday at 5."
It depends on the bag. If giblets were packed in a plastic bag, and the bag has been altered or melted by the cooking process, do not use the giblets or the poultry because harmful chemicals may have leached into the surrounding meat.
If the giblets were wrapped in paper, there is no concern, as long as the turkey is fully cooked to 165 F, measured with a food thermometer.
A meat thermometer: 165 F in the thickest part of the breast, the innermost thigh, and the innermost wing.