Hematology
In methemoglobin, what ion is bound to hemoglobin?
Fe3+ (Ferric iron)
Primary amoebic encephalitis (PAE) is caused by:
Naegleria fowleri
The volume of urine an adult patient excreted in 24 hours was 300mL. This condition would be termed:
Oliguria
What is the order of draw for capillary tubes?
Blood gas, EDTA, other anticoagulants, serum tubes
A patient has the following blood values:
RBC 6.5 x 10^12L, HGB 13.0, HCT 39%, MCV 65fl, MCH 21.5, MCHC 33%
These results are compatible with:
Iron deficiency; Pregnancy; Thalassemia minor; Beta thalassemia major
Thalassemia minor
The formation of germ tubes presumptively identifies:
Candida albicans
IgE
Urine that develops a port-wine color upon standing may contain:
Porphyrins
A two hour postprandial glucose test can be used to diagnose what?
A total WBC count is 10.0x103uL, and 25 nRBCs are seen per 100 leukocytes on the differential. What is the corrected leukocyte count?
8,000/uL or 8.0x103uL
Using a fluorescent microscope, a wet preparation of skin tissue reveals fluorescent septate hyphae. The smear was prepared using:
Calcofluor white
Which test has the greatest sensitivity for antigen detection?
Precipitin; Agglutination; ELISA; Complement fixation
ELISA
Microscopic analysis of a urine specimen results indicate moderate RBCs, but the occult blood strip test was negative. The laboratorian should determine if the patient has taken:
A phlebotomist needs to draw blood from a patient who has IVs on both arms. One is running heparin, the other saline; what should they do?
Draw below the IV that is running saline
Spherocytes result from which of the following abnormal processes?
Deficiencies of cellular membrane proteins; Absence of plasma lipoproteins; Defects in the cellular lipid bilayer; Deficiencies of cellular enzymes
Deficiencies of cellular membrane proteins
Multifocal brain lesions in AIDS patients are commonly caused by which parasite?
Toxoplasma gondii
The most appropriate assay for diagnosis of late latent or tertiary syphilis is (hint: this question was on our last exam!)
FTA-ABS
An eosinophil count may be requested on a urine from a patient with suspected:
acute interstitial nephritis
What tube additive is used for immunohematology tests such as DNA testing?
Acid Citrate Dextrose (ACD)
The reactive lymphocyte seen in the peripheral blood smear of patients with infectious mononucleosis is probably derived from which of the following?
T. Lymphocytes; B lymphocytes; Monocytes; Mast cells
T Lymphocytes
The eggs of which species of Schistosoma can be isolated from urine?
Schistosoma haematobium
Which of the following is cleaved as a result of activation of the classical complement pathway?
Properdin factor B, Clq, C4, C3b
C4
The synovial fluid easily forms small drops from an aspirating syringe. This viscosity is:
Normal; Increased; Associated with inflammation; associated with hypothyroidism
When performing venipuncture, you sense a slight vibration in the needle and blood flow stops, what is the most likely explanation?
The needle is up against a vein valve or wall