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Or you can do an at-home test

I wouldn't accept an out of date injection at the surgery

Got that answer from the fda

Features: Vitamin B12 in its active form methylcobalamin for an accelerated absorption Vitamin B12 levels may be negatively affected by a variety of substances, including alcohol, oral contraceptives, and drugs Vitamin B12 is involved in energy production and supports the production of red blood cells Vitamin B12 supplementation is recommended for healthy pregnancies to help balance hormonal fluctuation and support fetal development Research shows that adequate dietary intake of vitamin B6 and B12 is related to an improved memory function SISU Advantages: Fast-dissolving sublingual tablet that can be chewed or swallowed Good Manufacturing Practices standards Tested for guaranteed purity and potency NPN approved Ingredients: Medicinal: (per capsule) Vitamin B12 (methylcobalamin)...1,000 mcg Non-medicinal: lactose monohydrate, microcrystalline cellulose, magnesium stearate (vegetable), croscarmellose sodium