A positive test for CMV IgG indicates that a person was infected with CMV at some time during their life, but does not indicate when a person was infected. This applies for persons ≥12 months of age when maternal antibodies are no longer present.
CLOTTED BLOOD OR SERUM
7 TO 8 DAYS
A thyroid-stimulating hormone (TSH) test measures the amount of TSH in the blood. TSH is produced by the pituitary gland, which is located at the base of your brain. It’s responsible for regulating the amount of hormones released by the thyroid.
A vitamin B-12 level test checks the amount of vitamin B-12 in the blood or urine to gauge the body’s overall vitamin B-12 stores. Vitamin B-12 is necessary for several bodily processes, including nerve function and the production of DNA and red blood cells.
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