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MLS Chemistry 2020 > Chemistry > Flashcards

Flashcards in Chemistry Deck (82)
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1

An increased serum level of the following is most commonly associated with decreased glomerular filtration?

Creatinine

2

Jaffe reaction

Creatinine

3

What portion of bilirubin is increased in hemolytic anemia?

Increased unconjugated bilirubin

4

What type of bilirubin predominates in the serum of neonates?

Unconjugated bilirubin (Indirect)

5

When should peak drug levels be drawn?

1-2 hrs after dose

6

When should trough drug levels be drawn?

Immediately before next dose

7

Polyuria and low specific gravity and indicative of what disease process?

Diabetes Insipidus

8

What are the expected lab results of obstructive jaundice (posthepatic)?

Increased serum bilirubin
Increased urine bilirbin
Decreased urobilinogen

9

What are the expected lab values for prehepatic jaundice (hemolytic anemia)?

Increased serum unconjugated bilirubin
Increased urine urobilinogen

10

What are the expected lab values for hepatic disease (cirrhosis, viral hepatitis)?

Increased serum unconjugated + conjuaged bilirubin
Increased urine bilirubin + urobilinogen

11

Average glucose over 90 days
Diagnosis of diabetes

HbA1c

12

Detects small amounts of albumin in urine to assess early renal damage

Urinary albumin (microalbumin)

13

Fasting glucose > 126 mg/dL
>200 mg/dL random glucose
2 hr glucose >200 mg/dL
A1c >6.5%

Diabetes Mellitus

14

Impaired fasting glucose >100 but <126
Impaired glucose tolerance test >140 but <200
A1c 5.7-6.4%

Pre-diabetes

15

Insulin decreases what serum value?

Glucose

16

Metabolite of cocaine

benzoylecgonine

17

The primary form of secreted nitrogen is?

Urea

18

Increased in chemo patients, gout, renal failure and leukemia?

Uric acid

19

If this is increased it is toxic to the CNS?

ammonia level in the serum

20

Most common advanced liver disease with increased ammonia levels?

Reye's syndrome

21

Which of the cardiac markers rises and returns to normal latesest (remains elevated the longest) in acute MI?

Troponin

22

This cardiac marker rises within 4-6 hrs and peaks at 24 hrs. Returns to normal 3-4 days

Total CK

23

This cardiac marker rises between 3-6 hrs and peaks at 12-24 hrs. Returns to normal in 2-3 days.

CK-MB

24

What chemistry will be elevated in young children who's bones are rapidly developing and bone disorders?

ALP (alkaline phosphatase)

25

What causes Addison/s disease?

Destruction or failure of the adrenal cortex

26

Decreased aldosterone
Decreased cortisol
Decreased Hb, Na, Cl and urinary steroids

Addison's Disease
"Anemic Addison has a problem with everything being decreased."

27

Increased Cortisol + aldosterone
Increased Glucose, Na, urinary steroids

Cushing's Disease
"Cushy Carl has a problem with everything being elevated."

28

If elevated what analyte would support a diagnosis of congestive heart failure?

BNP

29

Decreased TSH
Increased T3 + T4

Hyperthyroidism

30

Most common cause of hyperthyroidism

Grave's disease
Go getter Gertrude Graves....everything is racing except my TSH!