“Nitrate Check (5 Tests)” has been added to your cart. Continue shopping Remove item Thumbnail image Product Price Quantity Subtotal × Peroxide Check (1 Test) $2.00 Peroxide Check (1 Test) quantity $2.00 × Nitrate Check (5 Tests) $20.00 Nitrate Check (5 Tests) quantity $20.00 Coupon: Apply coupon Update cart Cart totals Subtotal $22.00 Tax $0.00 Total $22.00 Proceed to checkout