Fulgent believes this information is useful to investors because it provides a basis for measuring the performance of the Company's business, excluding certain income or expense items that management believes are not directly attributable to the Company's operating results. Fulgent defines non-GAAP income (loss) as net income (loss) calculated in accordance with accounting principles generally accepted in the United States of America, or GAAP, plus amortization of intangible assets, plus equity-based compensation expenses, plus impairment of available-for-sale debt securities, plus or minus the non-GAAP tax effect, and plus or minus other charges or gains, as identified, that management believes are not representative of the Company's operations. The non-GAAP tax effect was calculated by excluding from the GAAP provision the impact of the amortization of intangible assets, equity-based compensation expenses, and impairment of available-for-sale debt securities.