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A hematology laboratory in a hospital has determined that the abnormal low RBC control has a mean value of 3.12 x 1012/L. The 95% confidence limits include red cell count values from 3.06 x 1012/L to 3.18 x 1012/L.  One standard deviation for this control is equal to  

An aerobic sheep blood agar plate from a human bite wound culture smelled significantly of hypochlorite. Upon observation, among the mixed respiratory flora, were tiny yellowish colonies sunk into small craters in the medium. Workup of the colonies revealed a small, nonfermenting, gram-negative bacillus that gave the following reactions: Based on the information below, the most likely identification for the organism is   catalase negative urease negative indole negative arginine negative lysine decarboxylase positive

The ristocetin induced platelet aggregation assay is useful in the diagnosis of which of the following coagulation defects?

A clinical laboratory scientist just finished pouring off a whole rack of chemistry specimens when he/she accidentally knocked the rack off the counter onto the floor. Standard protocol was followed in cleaning up the spill, but his/her gloves were observed to be bloody. Which of the following should be done next?

Which of the following patients is a candidate to receive Rh Immune Globulin (RhIG)?

The above immunofixation electrophoresis indicates that this patient has a gammopathy composed of

A 45-year-old male wants to donate a unit of allogeneic whole blood. The following information was collected at the time of the donor interview: Blood pressure 200/100 mmHg History of hepatitis at age 7 Currently taking Accutane for acne Antibiotics 6 weeks ago for sinus infection Which of these parameters could result in permanent deferral of this donor?

A pink cology is isolated on MAC from a clean catch urine culture with a colony count>100,000 / ml. The following biochemical reactions were recorded: TSI                 acid/acid with gas, no hydrogen sulfide lysine decarb.  positive indole              positive urea                negative citrate             negative The most likely identification of the organism is:  

Which of the following organisms would NOT grow as a darkly pigmented colony on Sabouraud dextrose media?

A patient’s initial CBC results are: RBC                             3.32 x 109/uL Hb                                6.8 g/dL Hct                               23.4% WBC                            6.3 x 103/uL Platelet count              345 x 103/uL   Based on these results, which is the appropriate follow-up test?