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Increases above normal ranges should prompt evaluation

Reichheld et al

At the end point, cells were rapidly washed with ice-cold PBS and incubated at 80 C for 30 min with extraction solvent at a ratio of 1 ml per 1 10 6 cells

Vitamin B12 deficiency is common because they cant absorb it as well from food

They help clarify how, where, or why a procedure was done

For a well that tests positive, ETR also offers a do-it-yourself chlorination kit with easy directions, gloves, and a chlorination agent made for potable wells, an approach that is safer and more effective than shocking a well with household bleach or pool chlorine, which leave behind odor and heavy metals