Medical Tests
Explore lab tests, blood work, and imaging exams with plain-language preparation and overview pages.
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All medical tests (102,751)
Other
Do you have someone with whom you can do something enjoyable [PROMIS]
Other
Do you have someone you can call when you want to chat [PROMIS]
Other
Do you have swelling in your knee during the last week [KOOS]
Other
Do you have this disorder [PhenX]
Other
Do you have to stop for breath when walking at your own pace on level ground [Rose Dyspnea Scale]
Other
Do you have to walk slower than people of your age on the level because of breathlessness [PhenX]
Other
Do you have trouble concentrating [GDS]
Other
Do you have trouble finding or paying for transportation [WellRx]
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Do you have trouble paying for your gas or electricity bills [WellRx]
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Do you have uncles, aunts, cousins, nephews, or nieces with hearing difficulties [PhenX]
Other
Do you have underage persons in your household
Other
Do you have utilities insecurity
Other
Do you have wall-to-wall carpeting in your home [FEAS]
Other
Do you hear better in one ear than the other [PhenX]
Other
Do you know if any of your relatives have already participated in this investigation [PhenX]
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Do you know of any other reason why you should not do physical activity [Revised PARQ]
Other
Do you know the reason for your hearing difficulty [PhenX]
Other
Do you lease, rent, own, or have a long-term agreement for a place to park or dock
Other
Do you look at the clock frequently to see how long you have not been able to fall asleep during the night when you cannot fall asleep [PhenX]
Other
Do you lose your balance because of dizziness or do you ever lose consciousness [Revised PARQ]
Other
Do you need any additional assistance or accommodations during your visit
Other
Do you need daycare, or better daycare, for your kids [WellRx]
Other
Do you need help finding a better job [WellRx]
Other
Do you need help getting more education [WellRx]
Other
Do you need help with legal issues
Other
Do you need insulin [PhenX]
Other
Do you normally work or attend school during the day and sleep at night [PhenX]
Other
Do you now have a tube in your right or left ear [PhenX]
Other
Do you now smoke cigarettes every day, some days, or not at all [PhenX]
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Do you now smoke cigarettes, as of 1 month ago [PhenX]
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Do you often eat, within any 2 hour period, what most people would regard as an unusually large amount of food [Reported.PHQ]
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Do you often feel helpless [GDS]
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Do you often feel that you can't control what or how much you eat [Reported.PHQ]
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Do you often feel under extreme stress Caregiver [SEEK]
Other
Do you often feel your child is difficult to take care of Caregiver [SEEK]
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Do you often get bored [GDS]
Other
Do you often get restless and fidgety [GDS]
Other
Do you often have so much trouble waking up that an alarm clock won't wake you and you have to use other methods to wake up [PhenX]
Other
Do you or anyone in the household have problems paying or unable to pay medical bills
Other
Do you or your child have any of the following diseases [PhenX]
Other
Do you own or rent your home
Other
Do you own, lease, or rent it
Other
Do you prefer to avoid social gatherings [GDS]
Other
Do you prefer to keep a regular sleep schedule - one that does not change much from one night to the next [PhenX]
Other
Do you prefer to stay at home, rather than going out and doing new things [GDS]
Other
Do you sip liquids frequently during the day to keep your mouth moist [PhenX]
Other
Do you sleep with your contact lenses in [PhenX]
Other
Do you snore [PhenX]
Other
Do you sometimes drink alcoholic beverages [Reported]
Other
Do you sometimes feel a fullness or blockage in your ears [PhenX]
Other
Do you sometimes find you need to slap or hit your child Caregiver [SEEK]
Other
Do you stay in a vehicle there
Other
Do you still have asthma [PhenX]
Other
Do you still have chronic bronchitis [PhenX]
Other
Do you still have emphysema [PhenX]
Other
Do you suffer from diabetes [PhenX]
Other
Do you suffer from intermittent claudication [PhenX]
Other
Do you suffer from migraine [PhenX]
Other
Do you suffer from white finger syndrome or raynaud's syndrome caused by excessive vibration from pneumatic hammers or drills [PhenX]
Other
Do you take aspirin on a daily basis for your heart or to dilute your blood [PhenX]
Other
Do you take cortisone, prednisone, other steroids, or anticancer drugs, or have you had radiation treatments [PhenX]
Other
Do you think it is wonderful to be alive now [GDS]
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Do you think that most people are better off than you are [GDS]
Other
Do you think this was a valid 7 days PAR interview Observer [PhenX]
Other
Do you use a magnifier to read [PhenX]
Other
Do you use an alarm clock to wake up in the morning [PhenX]
Other
Do you use dental floss [PhenX]
Other
Do you usually bring up phlegm at all during the rest of the day or at night [PhenX]
Other
Do you usually bring up phlegm at all on getting up or first thing in the morning [PhenX]
Other
Do you usually bring up phlegm from your chest [PhenX]
Other
Do you usually bring up phlegm like this as much as twice a day, 4 or more days of the week [PhenX]
Other
Do you usually cough as much as 4 to 6 times a day, 4 or more day out of the week [PhenX]
Other
Do you usually cough at all during the rest of the day or at night [PhenX]
Other
Do you usually cough at all on getting up, or first thing in the morning [PhenX]
Other
Do you usually cough like this on most days for 3 consecutive Mos or more during the year [PhenX]
Other
Do you usually follow the same sleep schedule, that is, no more than a 1 hour difference in sleep and wake times, on both work or school and non-work or school days [PhenX]
Other
Do you usually have a cough [PhenX]
Other
Do you usually have trouble starting to urinate, pass water [PhenX]
Other
Do you usually work 35 hours or more per week in total at all jobs or businesses [NHANES]
Other
Do you wake up on your own, without an alarm or other assistance [PhenX]
Other
Do you want to talk about contraception or pregnancy prevention during your visit today
Other
Do you wear glasses of any kind [PhenX]
Other
Do you wish you had more help with your child Caregiver [SEEK]
Other
Do you worry a lot about the past [GDS]
Other
Do you worry that help might not be available if you needed it [CIDI-SF]
Other
Do you worry that you might be trapped without any way to escape [CIDI-SF]
Other
Do your legs hurt when you walk [PhenX]
Other
Do, or did, you find it difficult to refrain from smoking in places where it is forbidden, such as in church, at the library, in a cinema, etc [FTND]
Other
Do, or did, you smoke if you are so ill that you are in bed most of the day [FTND]
Other
Do, or did, you smoke more frequently during the first hours after waking than during the rest of the day [FTND]
Blood test
Dobutamine [Mass/volume] in Serum or Plasma
Blood test
Docosadienoate (C22:2w6) [Entitic substance] in Red Blood Cells
Blood test
Docosadienoate (C22:2w6) [Moles/volume] in Serum or Plasma
Blood test
Docosahexaenoate (C22:6w3) [Entitic substance] in Red Blood Cells
Blood test
Docosahexaenoate (C22:6w3) [Moles/volume] in Serum or Plasma
Blood test
Docosahexaenoate (C22:6w3)/Fatty acids.C14-C22 in Blood
Blood test
Docosahexaenoate (C22:6w3)/Fatty acids.C14-C24 in Serum or Plasma
Other
Docosahexaenoate (DHA) intake 24 hour Estimated
Other
Docosahexaenoate (DHA) intake 24 hour Measured
Blood test
Docosapentaenate (C22:5w3) [Entitic substance] in Red Blood Cells