Carlos and Sally each have a routine physical examination that includes measurement of thyroid hormone levels in their plasma $$\begin{array} { | l | l | l | }
\hline & \text { Total Bound } & \
\hline & \text { Plasma TH } & \text { Plasma TH } \
\hline \text { Carlos } & 8 \mu \mathrm { g } / \mathrm { dL } & 7.998 \mu g/ \mathrm { dL } \
\hline \text { Sally } & 12 \mu \mathrm { g } / \mathrm { dL } & 11.998 \mu \mathrm { g } / \mathrm { dL } \
\hline \hline
\end{array}$$ Sally has no symptoms of thyroid problems.Therefore,
A)Carlos probably has symptoms of hypothyroidism
B)Carlos probably has symptoms of hyperthyroidism
C)Carlos probably has no symptoms of thyroid problems
D)Sally probably has a goiter

Question

Carlos and Sally each have a routine physical examination that includes measurement of thyroid hormone levels in their plasma $$\begin{array} { | l | l | l | } 
\hline & \text { Total Bound } & \
\hline & \text { Plasma TH } & \text { Plasma TH } \
\hline \text { Carlos } & 8 \mu \mathrm { g } / \mathrm { dL } & 7.998 \mu g/ \mathrm { dL } \
\hline \text { Sally } & 12 \mu \mathrm { g } / \mathrm { dL } & 11.998 \mu \mathrm { g } / \mathrm { dL } \
\hline \hline
\end{array}$$ Sally has no symptoms of thyroid problems.Therefore,
A)Carlos probably has symptoms of hypothyroidism
B)Carlos probably has symptoms of hyperthyroidism
C)Carlos probably has no symptoms of thyroid problems
D)Sally probably has a goiter

Quizplus · Accepted Answer

The given measurements of plasma TH levels indicate that both Carlos and Sally have normal thyroid function. The total bound plasma TH levels for both individuals are within the normal range of 4-12 µg/dL, and the slight variation in measurement could be due to laboratory error or individual variation. The fact that Sally has no symptoms of thyroid problems further supports the idea that the measurements are within the normal range. Therefore, choice C is the best answer. Choices A, B, and D are not supported by the given information.

Carlos and Sally Each Have a Routine Physical Examination That