4.2.3.2 Major Hormones (Thyroid Gland, Lab diagnosis) Flashcards

1
Q

Most important test of thyroid function

a. TSH
b. T4
c. T3 uptake (T3U)
d. Free T4 index (FTI)

A

a

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2
Q

Relative estimate of free T4 concentration; product if TT4 and THBR

a. TSH
b. T4
c. T3 uptake (T3U)
d. Free T4 index (FTI)

A

d

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3
Q

Reflects the quantity of TBG (Thyroxine binding globulin) present and the number of hormones bound to it

a. TSH
b. T4
c. T3 uptake (T3U)
d. Free T4 index (FTI)

A

c

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4
Q

Inversely proportional to TBG

a. TSH
b. T4
c. T3 uptake (T3U)
d. Free T4 index (FTI)

A

c

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5
Q

1st test for screening, if normal, no further testing

a. TSH
b. T4
c. T3 uptake (T3U)
d. Free T4 index (FTI)

A

a

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6
Q

Biologically active form of T4

A

FT4

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7
Q

requires separation of the hormone form its carrier protein using equilibrium dialysis

a. TSH
b. T4
c. T3 uptake (T3U)
d. Free T4 index (FTI)

A

b

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8
Q

Usually only tested when TSH is low and FT4 is normal

a. T3
b. RAIU
c. Anti-TPO
d. TRAb/TSHRAb

A

a

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9
Q

Is TSH is low ad FT4 is normal, it may be indicative for ?

a. Graves disease
b. Hashimotos disease
c. T3 thyrotoxicosis

A

c

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10
Q

Thyroid-stimulating antibodies that mimic the action of TSH

a. T3
b. RAIU
c. Anti-TPO
d. TRAb/TSHRAb

A

d

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11
Q

Measures thyroidal uptake of iodine after an oral dose of I131

a. T3
b. RAIU
c. Anti-TPO
d. TRAb/TSHRAb

A

b

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12
Q

Detected as thyroid microsomal antibodies using agglutination of immunofluorescence

a. T3
b. RAIU
c. Anti-TPO
d. TRAb/TSHRAb

A

c

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13
Q

Very sensitive marker for Hashimoto’s thyroiditis

a. T3
b. RAIU
c. Anti-TPO
d. TRAb/TSHRAb

A

c

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14
Q

Positive 85% of patients with Grave’s Disease

a. T3
b. RAIU
c. Anti-TPO
d. TRAb/TSHRAb

A

d

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15
Q

TSH: Decrease
Free T4: Increase
TT4/TT3: Increase
T3U: Increase

a. Primary hyperthyroidism
b. Primary hypothyroidism
c. Secondary hyperthyroidism
d. Secondary hypothyroidism

A

a

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16
Q

TSH: Increase
Free T4: Increase
TT4/TT3: Increase
T3U: Increase

a. Primary hyperthyroidism
b. Primary hypothyroidism
c. Secondary hyperthyroidism
d. Secondary hypothyroidism

A

c

17
Q

TSH: Decrease
Free T4: Decrease
TT4/TT3: Decrease
T3U: Decrease

a. Primary hyperthyroidism
b. Primary hypothyroidism
c. Secondary hyperthyroidism
d. Secondary hypothyroidism

A

d

18
Q

TSH: Increase
Free T4: Decrease
TT4/TT3: Decrease
T3U: Decrease

a. Primary hyperthyroidism
b. Primary hypothyroidism
c. Secondary hyperthyroidism
d. Secondary hypothyroidism

A

b

19
Q

TSH: Normal
Free T4: Normal
TT4/TT3: Increase
T3U: Decrease

a. Euthyroid, Increase TBG
b. Euthyroid, Decrease TBG

A

a

20
Q

TSH: Normal
Free T4: Normal
TT4/TT3: Decrease
T3U: Increase

a. Euthyroid, Increase TBG
b. Euthyroid, Decrease TBG

A

b

21
Q

TBG affects TT4/TT3 directly proportional while in T3U it is inversely proportional

T or F

A

T