Medical Tests
Explore lab tests, blood work, and imaging exams with plain-language preparation and overview pages.
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Tests starting with D (3,903)
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]
Other
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
Blood test
Docosapentaenate (C22:5w3) [Moles/volume] in Serum or Plasma
Blood test
Docosapentaenate (C22:5w3)/Fatty acids.C14-C22 in Blood
Blood test
Docosapentaenate (C22:5w6) [Entitic substance] in Red Blood Cells
Blood test
Docosapentaenate (C22:5w6) [Moles/volume] in Serum or Plasma
Blood test
Docosapentaenoate (C22:5 n-3) [Moles/volume] in Serum or Plasma
Blood test
Docosatetraenoate (C22:4w6) [Entitic substance] in Red Blood Cells
Blood test
Docosatetraenoate (C22:4w6) [Moles/volume] in Serum or Plasma
Blood test
Docosatrienoate (C22:3w9) [Entitic substance] in Red Blood Cells
Blood test
Docosatrienoate (C22:3w9) [Moles/volume] in Serum or Plasma
Blood test
Docosenoate (C22:1) [Entitic substance] in Red Blood Cells
Blood test
Docosenoate (C22:1) [Moles/volume] in Serum or Plasma
Other
Docosenoate (C22:1)/Creatinine [Molar ratio] in Urine
Other
Doctor or health care professional ever told you that you have diabetes
Other
Doctor reported child vision problem [PhenX]
Other
Doctor visit sequence [PhenX]
Other
Document key words
Other
Document management [CDC Emergency Operations Centers]
Other
Document name [Identifier]
Other
Document summary
Other
Document synopsis
Other
Document template attachment request modifier codes
Other
Document type
Other
Document type ID
Other
Documentation of previous rubella immunity testing
Other
Documented rescue interventions [AHRQ]
Blood test
Docusate induced platelet IgG Ab [Presence] in Serum or Plasma by Flow cytometry (FC)
Blood test
Docusate induced platelet IgM Ab [Presence] in Serum or Plasma by Flow cytometry (FC)
Other
Dodecanedioate/Creatinine [Mass Ratio] in Urine
Other
Dodecanedioate/Creatinine [Molar ratio] in Urine
Other
Dodecanoylcarnitine (C12) [Moles/volume] in Amniotic fluid
Other
Dodecanoylcarnitine (C12) [Moles/volume] in Cerebral spinal fluid
Other
Dodecanoylcarnitine (C12) [Moles/volume] in DBS
Blood test
Dodecanoylcarnitine (C12) [Moles/volume] in Serum or Plasma
Other
Dodecanoylcarnitine (C12) [Moles/volume] in Urine
Other
Dodecanoylcarnitine (C12)/Creatinine [Molar ratio] in Urine
Other
Dodecenedioate/Creatinine [Molar ratio] in Urine
Other
Dodecenoylcarnitine (C12:1) [Moles/volume] in Amniotic fluid