The label must bear the food additive class name (such as "flavor enhancer"), followed by either the name of the food additive (such as "MSG") or its International Numbering System (INS) number (e.g., "621"). Canada
The Canada Food Inspection Agency considers claims of "no MSG" or "MSG free" to be misleading and deceptive when other sources of free glutamates are present. Ingredients
Forms of glutamic acid that can be added to food include:

Monosodium glutamate
Glutamic acid (E620), glutamate (E620)
Monopotassium glutamate (E622)
Calcium glutamate (E623)
Monoammonium glutamate (E624)
Magnesium glutamate (E625)
Sodium glutamate (E621)The following are also rich sources of glutamic acid, and may be added for umami flavor:
Hydrolyzed vegetable protein
Autolyzed yeast, yeast extract, yeast food, and nutritional yeast
Cheese products, e.g. parmesan (1200 mg / 100 g)
Various savory fermented seasonings, including soy sauce and worcestershire sauce
(See § Sources for more examples.) See also
Notes
References
External links
"The Long Fuse". This American Life (Radio broadcast). Episode 668. February 15, 2019. Public Radio Exchange (PRX). WBEZ. Retrieved February 21, 2019. See the segments "Prologue" and "Humor Is Not the Best Medicine" for the story behind "Chinese restaurant syndrome".
Embryonic Hbs include:
Hb Gower-1, composed of two ζ globins (zeta globins) and two ε globins (epsilon globins) (ζ2ε2)
Hb Gower-2, composed of two alpha globins and two epsilon globins (α2ε2)
Hb Portland, composed of two zeta globins and two gamma globins (ζ2γ2)
Fetal Hb (Hb F) is produced from approximately eight weeks of gestation through birth and constitutes approximately 80 percent of Hb in the full-term neonate. It declines during the first few months of life and, in the normal state, constitutes <1 percent of total Hb by early childhood. Hb F is composed of two alpha globins and two gamma globins (α2γ2). Adult Hb (Hb A) is the predominant Hb in children by six months of age and onward; it constitutes 96-97% of total Hb in individuals without a hemoglobinopathy. It is composed of two alpha globins and two beta globins (α2β2). Hb A2 is a minor adult Hb that normally accounts for approximately 2.5-3.5% of total Hb from six months of age onward. It is composed of two alpha globins and two delta globins (α2δ2). Classification of hemoglobinopathies
A)  Qualitative
Structural abnormalities
Hb variants: Hb structural variants are qualitative defects that cause a change in the structure (primary, secondary, tertiary, and/or quaternary) of the Hb molecule. The majority of Hb variants do not cause disease and are most commonly discovered either incidentally or through newborn screening. A subset of Hb variants can cause severe disease when inherited in the homozygous or compound heterozygous state in combination with another structural variant or a thalassemia mutation.