Modern physicians often employ laboratory tests, in addition to

Definitely with (A) , errors in other options in my opinion highlighted in RED

Ans is E using negation test- Physical examination and the uncovered insurance tests together do not provide a more accurate diagnosis of many diseases.... If they do not then there wont be a decrease in the quality of medical care provided to patients

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Modern physicians often employ laboratory tests, in addition to physical examinations, in order to diagnose diseases accurately. Insurance company regulations that deny coverage for certain laboratory tests therefore decrease the quality of medical care provided to patients.

Type- assumption
Conclusion - insurance company regulations that deny coverage for certain laboratory tests, therefore, decrease the quality of medical care provided to patients.

(A) Physical examinations and the uncovered laboratory tests together provide a more accurate diagnosis of many diseases than do physical examinations alone. -- Correct -- If together the two of them provide a more accurate diagnosis , then YES -- insurance companies are decreasing the quality of medical care Else NOT
(B) Many physicians generally oppose insurance company regulations that, in order to reduce costs, limit the use of laboratory tests. -- Irrelevant -- this only provides a reason why would insurance companies deny coverage
(C) Many patients who might benefit from the uncovered laboratory tests do not have any form of health insurance. -- Irrelevant -- we are not even bothered about such folks
(D) There are some illnesses that experienced physicians can diagnose accurately from physicians examination alone. -- Irrelevant --
(E) Laboratory tests are more costly to perform than are physical examinations. -- Irrelevant

Answer A

GMATNinja, Could you help to explain for this CR?

Lab tests help in improving the diagnosis. But since insurance companies deny such tests the argument concludes that medical care will deteriorate


If physical tests alone could provide diagnosis then insurance regulation wouldn’t be interfering with the diagnosis since that would suggest that lab tests are indeed unnecessary. However, if the statement is taken as is then it would help in filling the gap


Argument is not about the physician’s choice. it is about the insurance industry’s regulations. Out of scope


This would weaken the argument because if majority of patients don’t have any cover then insurance regulation won’t impact the argument


Some illnesses will always be there. For example anyone can catch a normal flu. Not relevant


Argument is not about cost effectiveness of a test. Out of scope.

Answer must be A

hazelnut: Your issue from chat

I thought it is a necessary condition for doctor to perform the examinations.

My explanation:
re-read the argument. It is stating that doctors often employ lab tests to improve diagnosis. So in order to bridge the argument we need to state something that gives the idea that "lab tests" are indeed necessary for improving the diagnosis. Option "A" does just that.

Modern physicians often employ laboratory tests, in addition to physical examinations, in order to diagnose diseases accurately. Insurance company regulations that deny coverage for certain laboratory tests therefore decrease the quality of medical care provided to patients.

Which one of the following is an assumption that would serve to justify the conclusion above?

Given: Lab Test + Physical Examination --> Accurate diagnose of diseases.
Insurance Company Deny coverage of certain Lab Test --> decrease the quality of medical care provided to patients.

Author assumes that Lab tests which would be denied by Insurance Co. play important role in accurate diagnose of diseases.

(A) Physical examinations and the uncovered laboratory tests together provide a more accurate diagnosis of many diseases than do physical examinations alone. Yes. Right. Negating the option breaks the Argument.

(B) Many physicians generally oppose insurance company regulations that, in order to reduce costs, limit the use of laboratory tests. Out of Scope

(C) Many patients who might benefit from the uncovered laboratory tests do not have any form of health insurance. Out of Scope

(D) There are some illnesses that experienced physicians can diagnose accurately from physicians examination alone. Out of Scope

(E) Laboratory tests are more costly to perform than are physical examinations. Out of Scope

VeritasKarishma GMATNinja egmat COULD YOU PLEASE EXPLAIN OPTION C. After Applying variance test it strenthens and weakens the argument, then why is it not an answer??

Remember the conclusion:
If Insurance company denies cost for certain medical tests then there is decrease in the quality of medical care provided to patients (by insurance company).

This option - option C - talks about case/possibility, where people dont have any health insurance. That means there is no question of impact on quality of healthcare provided by an insurance company (to that patient).

Restated premise cannot be an assumption, right.

Option A is a restatement of the first premise.

Correct me if I'm wrong.

Also, can you please post the OE, it would be helpful

No, there is NO such rule on GMAT CR.


And by the way, option A is NOT restatement of premise. Read colsely.

Premise: Modern physicians often employee laboratory tests, in addition to physical examinations, in order to diagnose diseases accurately.

Option-(A): Physical examinations and the uncovered laboratory tests together provide a more accurate diagnosis of many diseases than do physical examinations alone.

Premise says, doctors to something in addition to one thing with some intent. (not sure of results/does NOT validate claim)
Option A provides fact that two thing together DO provide something (results)




As for POE, many of the above explanations have given that.
Hope this helps.

option A is correct since a more accurate diagnosis means better quality health care.

Powerscore official solution

The conclusion in this stimulus is that insurance company regulations which deny coverage for lab tests decrease the quality of health care. This conclusion requires a couple assumptions. First, that the insurance restrictions are leading to reduced use of tests. (This seems like a plausible assumption according to ordinary economic reasoning, but it is not stated in the stimulus.) Second, that the lab tests actually improve the quality of health care.

The question stem asks us to "justify" the conclusion, meaning that a single correct answer choice will fill in all the missing assumptions and make the argument air-tight.

Answer choice (A): This is the correct answer choice. This answer choice states that the lab tests improve quality of medical care. This is the best answer choice, although it does not exactly "justify" the conclusion as the question stem asks. Note that the argument still has a missing assumption: it has failed to establish that the insurance restrictions are reducing use of the tests by patients. The LSAT test makers did not choose their words very carefully here.

Answer choice (B): The personal opinion of physicians regarding the insurance restrictions does not give us a clear implication about whether these lab tests improve quality of care. Perhaps physicians favor these tests because they truly provide value for patients \96 or perhaps physicians favor these tests because they are good revenue generators.

Answer choice (C): If some patients who might benefit from the tests have no health insurance whatsoever, then the insurance restrictions do not affect these patients. A reduction of quality of care is thus impossible for these patients (unless we make the roundabout argument that doctors lose revenue and thus the overall quality of their medical practice suffers). This answer choice tends to weaken the stimulus argument.

Answer choice (D): Even if "some" illnesses can be diagnosed without lab tests, this answer choice does not speak to the issue of whether lab tests improve quality of medical care. If anything, this answer choice weakens the stimulus by showing that lab tests are not quite so valuable as we might suppose.

Answer choice (E): This answer choice does not speak to the issues of (1) value added for patients by the lab tests, or (2) whether the insurance restrictions are reducing use of the lab tests.

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