Mycoplasma negative if there is no urinary urgency, urinary frequency, urinary pain or cough and other related symptoms, you can not need to review, used to confirm the diagnosis of respiratory mycoplasma infection need to be examined several times. Mycoplasma mainly infects the human urethra and respiratory tract, infection of the urethra can cause nongonococcal urethritis, infection of the respiratory tract can cause mycoplasma pneumonia or bronchitis. Respiratory mycoplasma examination is based on blood sampling, there are respiratory infection mycoplasma symptoms, but mycoplasma examination is negative, should be checked two more times, a total of three times, three times are negative can be ruled out respiratory mycoplasma infection. Respiratory mycoplasma infection is cured, the test is negative do not need to retest again. Mycoplasma examination of urinary tract infection is based on secretion or urine examination, urinary mycoplasma infection is easy to detect, mycoplasma examination is negative once can rule out urinary mycoplasma infection. Mycoplasma urogenitalis infection is cured, the retest is negative, there is no need to retest again.