Which of the following does not produce H2S?

Which organism is negative for the oxidase test?

Please refer to the information below for questions #116 through #120. A cervical swab from a pregnant 20-year-old female at 36 weeks gestation is received in the laboratory. The swab is planted to primary isolation media. The following are observed after an appropriate incubation period: ·         Blood agar:  1+ normal genital flora·         Chocolate agar:  1+ normal genital flora; 3+ medium cream-greys·         Thayer Martin:  2+ small cream-greys Upon further testing, the colony suggestive of a pathogen is found to be β-lactamase positive.  Which of the following would not be considered normal flora in this patient?

Match the type of red cell modification to the reason for modification below.  Use answers only once.

Which of the following statements are true of the nitrocefin β-lactamase test?

What percentage of  offspring from a group Dce/dce man and a dce/dce woman can be expected to be D negative?

Please refer to the information below for questions #107 through #109.  A catheter urine from a patient in intensive care is received in the laboratory and inoculated to primary isolation media.  Following overnight incubation:· BAP:  > 107 CFU/L medium grey, translucent to opaque, gamma-hemolytic colonies · MAC:  no growthThis organism is found to be catalase negative.  What is the likely genus of this organism?

The novobiocin susceptibility test:

Please consult the Panel Antigram and information below to answer questions #47 – #55.  CellCDEceKkFyaFybJkaJkbLeaLebP1MNSsLuaLubAHGSens.Cells1+++0+0++0+0+00+00+0+3+ 2++00+0+0+0+00++0++0+1+ 30+++00+0+0+0+++++00+4+ 4+00++0+0+++0+++0+00+02+500+++0++++++0+++0+++2+ 6000++++0++++0+0+0+0+02+7000++0++00+0+++0+0+002+80+0++0+0++0+0++00+0+1+ 9000++0+00+00++0+000+02+10000+++0++0+0+0++0+0+02+Patient Cell Profile000++              Auto02+A transient, 25 year old Caucasian female has come in for prenatal lab work. She is gravida 2, para 0 and had an abortion at 18. She has had 3 transfusions in the past. She is presently in her 30th week of gestation. She was given a prenatal injection of Rh Immune Globulin at 28 weeks gestation. She is group O Rh neg. Antibody Screen AHG CC I 2+   II 2+   III 0 2+ Which antibody/antibodies is/are present in this patient’s plasma?

What must be avoided when performing an oxidase test?