M2: Microscopic Examination (Part 2: Sediment Examination Techniques) Flashcards
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
Consists of Crystal violet and Safranin O
Sternheimer Malbin Stain
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
Action: Delineates structure and contrasting colors of the
nucleus and cytoplasm
Sternheimer Malbin Stain
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
Function: Provides a more detailed visualization of the
internal structure of WBCs, epithelial cells and casts
Sternheimer Malbin Stain
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
RBC color result for in neutral, acidic, and alkaline urine?
Sternheimer Malbin Stain
neutral: pink to purple
acid: pink
alkaline: purple
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
WBC nuclei and cytoplasm color result
Sternheimer Malbin Stain
nuclei: purple
cytoplasm: purple granules
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
Squamous nucleus and cytoplasm color result
Sternheimer Malbin Stain
Nucleus: orange-purple
Cytoplasm: light purple or blue
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
Bacteria color result for motile and non-motile
Sternheimer Malbin Stain
motile: unstained
non-motile: purple
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
Action: Enhances nuclear detail
Function: Differentiates WBCs and renal tubular epithelial
(RTE) cells
0.5% Toluidine Blue
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
Action: Lyses RBCs and enhances nuclei of WBCs
Function: Distinguishes RBCs from WBCs, yeast, oil
droplets, and crystals
2% acetic acid
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
Enhances nuclear detail/nuclei
a. Sternheimer Malbin Stain
b. 0.5% Toluidine Blue
c. 2% acetic acid
d. a and c
e. b and c
f. ALL
g. NOTA
e. b and c
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
Action: Stain triglycerides and neutral fats orange-red (Do
not stain cholesterol)
Function: Identify free fat droplets and lipid-containing cells and casts
Lipid stains: Sudan III or Oil Red O
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
T or F
To confirm presence of lipids triglycerides, neutral fats, and cholesterol) from other sediments such as free fat droplets and lipid-containing cells and casts in the urinary sediment, staining is only used
Lipid stains: Sudan III or Oil Red O
F (staining and polarization)
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
T or F
Sudan III or Oil Red O stains cholesterol
Lipid stains: Sudan III or Oil Red O
F (does not)
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
Action: Stains structures containing iron
Function: Identifies yellow-brown granules of hemosiderin in cells and casts.
Prussian Blue
SEDIMENT EXAMINATION TECHNIQUES: URINE SEDIMENT STAINS
Prussian Blue result for presence of homosiderin
Prussian Blue
Blue