ppb = parts per billion. "Below the lab's limit" means the lab could not measure it reliably, not that it is absent.
Typical for restaurant and fast food
FDA doesn't test this exact kind of food, so these are the closest foods it does test. Treat them as a rough guide.
Cadmium: typically 20.8 ppb(FDA, 108 samples, 2017-2020).
A toddler reaches EPA's daily limit at about 680 g (24 oz) a day; an adult at about 3.2 kg (7.1 lb).
One serving (100 g (3½ oz)):
15% of a toddler's daily limit
3% of a adult's daily limit
Arsenic (total): typically 2.03 ppb(FDA, 108 samples, 2017-2020).
No US agency limit we can cite.
Perchlorate: typically 2.83 ppb(FDA, 60 samples, 2008-2012).
A toddler reaches EPA's daily limit at about 2 kg (4.4 lb) a day; an adult at about 9.5 kg (21 lb).
One serving (100 g (3½ oz)):
5% of a toddler's daily limit
1% of a adult's daily limit
Lead, Mercury: usually below 4 ppb, the lab's limit, in FDA's samples.
FDA samples behind these numbers
Lead in Chicken breast, fried with skin, fast-food: found in 1 of 27, average 0.29, highest 7.8 ppb (2017-2020)
Lead in Chicken nuggets, fast-food: found in 1 of 27, average 0.16, highest 4.3 ppb (2017-2020)
Lead in Pizza, cheese, fast-food: found in 2 of 27, average 0.32, highest 4.6 ppb (2017-2020)
Lead in Potatoes, French fries, fast-food: found in 1 of 27, average 0.56, highest 15 ppb (2017-2020)
Cadmium in Chicken breast, fried with skin, fast-food: found in 27 of 27, average 3.78, highest 5.8 ppb (2017-2020)
Cadmium in Chicken nuggets, fast-food: found in 27 of 27, average 5.7, highest 8.3 ppb (2017-2020)
Cadmium in Pizza, cheese, fast-food: found in 27 of 27, average 20.6, highest 25 ppb (2017-2020)
Cadmium in Potatoes, French fries, fast-food: found in 27 of 27, average 57.9, highest 100 ppb (2017-2020)
Mercury in Chicken breast, fried with skin, fast-food: found in 0 of 27, all below 1 ppb (2017-2020)
Mercury in Chicken nuggets, fast-food: found in 0 of 27, all below 1 ppb (2017-2020)
Mercury in Pizza, cheese, fast-food: found in 0 of 27, all below 1 ppb (2017-2020)
Mercury in Potatoes, French fries, fast-food: found in 0 of 27, all below 1 ppb (2017-2020)
Arsenic (total) in Chicken breast, fried with skin, fast-food: found in 5 of 27, average 0.61, highest 4.1 ppb (2017-2020)
Arsenic (total) in Chicken nuggets, fast-food: found in 4 of 27, average 0.56, highest 4.8 ppb (2017-2020)
Arsenic (total) in Pizza, cheese, fast-food: found in 25 of 27, average 3.74, highest 6 ppb (2017-2020)
Arsenic (total) in Potatoes, French fries, fast-food: found in 23 of 27, average 3.97, highest 6.4 ppb (2017-2020)
Perchlorate in Chicken breast, fried, fast-food (w/ skin): found in 10 of 20, average 5.42, highest 36 ppb (2008-2012)
Perchlorate in Chicken nuggets, fast-food: found in 13 of 20, average 3.42, highest 12.5 ppb (2008-2012)
Perchlorate in Potato, french-fried, fast-food: found in 14 of 20, average 6.68, highest 19 ppb (2008-2012)
"Typically" is FDA's middle sample. Daily amounts use the long-run average and each chemical's daily limit (EPA reference dose, or FDA's level for lead) for a 33-lb toddler and a 154-lb adult. ppb = micrograms per kilogram of food. Source: FDA Total Diet Study.
Not tested
No published results for this product cover: Metals, Perchlorate. That means nobody has published a test, not that these are absent.