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A fresh urine sample is received for analysis for “porphyrins” or “porphyria” without further information or specifications. Initial analysis should include:
Which of the following enzymes of heme biosynthesis is inhibited bylead?
In amniotic fluid, the procedure used to detect hemolytic disease of the newborn is:
Hemoglobin S can be separated from hemoglobin D by which of the following methods?
Before unconjugated bilirubin can react with Ehrlich diazo reagent, which of the following must be added?
The most widely used methods for bilirubin measurement are those based on the:
In the Evelyn-Malloy method for the determination of bilirubin, the reagent that is reacted with bilirubin to form a purple azobilirubin is:
In the Jendrassik-Grof method for the determination of serum bilirubin concentration, quantitation is obtained by measuring the green color of:
In the Jendrassik-Grof reaction for total bilirubin, alkaline tartrate is added to:
The laboratory results shown in this table are obtained on a patient suspected to have liver disease.
|
test |
patient value |
|
Chemistry |
|
|
total bilirubin |
9.5mg/dl |
|
unconjugated bilirubin |
8.5mg/dl |
|
urine bilirubin |
negative |
|
urine urobilinogen |
increased |
The type of jaundice would be classified as:
The laboratory results shown in this table are obtained on a patient suspected to have liver disease.
|
test |
patient value |
|
total bilirubin |
9.5mg/dL |
|
unconjugated bilirubin |
1.5mg/dL |
|
urine bilirubin |
positive |
|
urine urobilinogen |
decreased |
The type of jaundice would be classified as:
A quantitative measurement of urobilinogen uses the following reagent:
The results the biochemical profile shown in this table are most consistent with:
|
test |
patient value |
reference range |
|
total protein |
7.3g/dL (73g/L) |
6.0-8.0 g/dL (60-80 g/L) |
|
albumin |
4.1 g/dL (41 g/L) |
3.5-5.0 g/dL (35-50 g/L) |
|
calcium |
9.6 mg/dL (2.4 mmol/L) |
8.5-10.5 mg/dL (2.1-2.6 mmol/L) |
|
phosphorus |
3.3 mg/dL (1.06 mmol/L) |
2.5-4.5 mg/dL (0.80-1.45 mmol/L) |
|
glucose |
95mg/dL (5.2 mmol/L) |
65-110 mg/dL (3.6-6.1 mmol/L) |
|
BUN |
16 mg/dL (5.71 mmol/L) |
10-20 mg/dL (3.57-7.14 mmol/L) |
|
uric acid |
6.0 mg/dL (356.9 μmol/L) |
2.5-8.0 mg/dL (148.7-475.8 μmol/L) |
|
creatinine |
1.2mg/dL (106.1 μmol/L) |
0.7-1.4 mg/dL (61.9-123.8 μmol/L) |
|
total bilirubin |
3.7 mg/dL (63.3 μmol/L) |
0.2-0.9 mg/dL (3.4-15.4 μmol/L) |
|
alkaline phosphatase |
275 U/L |
30-80 U/L |
|
lactate dehydrogenase |
185 U/L |
100-225 U/L |
|
AST |
75 U/L |
10-40 U/L |
The most specific enzyme test for acute pancreatitis s:
Which of the following enzymes are used in the diagnosis of acute pancreatitis?
Which of the following enzymes catalyzes the conversion of starch to glucose and maltose?
Which of the following sets of results would be consistent with macroamylasemia?
In acute pancreatitis, the following results would be expected:
What enzyme is measured in the reaction of maltoheptaose-nitrophenol producing glucose fragments and 4-nitrophenol?
Aspartate amino transferase (AST) is characteristically elevated in diseases of the: