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Laboratory Testing

Before a doctor can diagnose a patient, laboratory tests such as blood work are required.

8,512 Questions

How far back can an etg detect alcohol?

About 72 hours for the urine test. Much longer for the hair follicle test. EtG (ethyl glucuronide) is an alcohol metabolite that remains in your body for several days after the liver has cleared alcohol from the bloodstream.

Is 14.4 hemoglobin results bad?

It is not bad at all. Normal range is 12-15.

Is a hematocrit of 27.7 critical in an adult female?

A hematocrit of 27.7 in an adult female is low, but is not considered a critical level requiring emergency contact and follow-up.

Interface of an X-ray machine?

I had to look this up, but it sounded intriguing. After all, people made X-rays on machines whose "interface" was a knob for the last 100 years. It should be obvious to all that since knobs no longer work for anything, there have to be a billion buttons and a Windows interface on it, right? Turns out there are two kinds of X-ray machines on the market today--digital and analog. A digital X-ray machine is pretty nice if you've got a computerized hospital--you can take a picture of someone in a hospital in Alaska and a radiologist in Seattle, or at the Mayo Clinic, can read the X-ray from the comfort of her own office. Those machines have fancy Windows-based interfaces. Then there are analog machines, which expose film--still a very viable technology because instead of putting a CD containing a patient's X-rays in his record, and hoping the hospital's new computer will read it ten years down the road or the hospital ten miles down the road has a computer that can read the X-ray file format, you put the film in the record and read it by holding it up in front of the window. They still have knobs, or up/down pushbuttons that do the same thing.

Does difluoroethane show up on drug tests?

dose 1,1-difluoroethane show up in drug test or is there a test for it specifically

Is 5 days enough to detox from cannabis?

No it usually takes about 1 month to remove it from your urine, and about 5 months to remove it from your blood stream. Try water pills right befor your test.

Do you need a doctors order to get a cholesterol blood test?

In Canada, yes. However it may vary depending on where you live

What does low egfr non afr american indicate?

A low EGFR on an African American may indicate a kidney disease. This diagnosis should be made by a doctor.

Can you keep pee in thr fridge to keep it fresh?

yes, but then you have to heat it when you need it. It needs to be 98 degrees.

What are the functions of artery and vein?

Artery:

Vessels whereby Blood flows from the heart to the lungs & rest of organs and body (rich in oxygen).

Vein:

Vessels whereby Blood flows from organs and body to the heart (low in oxygen).

What Chemicals to put in urine not the body to clean it for drug test?

it has been rumored that bleach will clean the urine if you put a drop or two on your finger and pee directly onto your finger

Can a mono test tell if you are pregnant?

A mononucleosis test? No. It tests a different set of chemical levels in your body. Try an over-the-counter test.

A low specific gravity will indicate what DISEASE?

Excretion of large amounts of urine with low specific gravity less than 1.005 can be an indication of diabetes insipidus. Diabetes insipidus is a disorder of the posterior pituitary gland, usually resulting from the absence OR underproduction of ADH due to trama, or lesion to the hypothalamus, infundibular stem, or pituitary gland which produce and secrete ADH (Central DI). An insensitivity to ADH in the tubules of the nephrons (nephrongenic DI). Most rare is psychogenic DI in which there is an excessive water intake which results from trauma in the thirst center of the brain or a psychiatric disorder.

What are the normal ranges for a VEP test and are the readings supposed to be the same for both eyes?

The VEP is going to yield different answers depending on what the test is looking for and if the person receiving the test is an infant or an adult.

In very young children the test is looking for potential visual acuity. A two month old child can't read a chart or even maintain the attention span necessary to study a visual stimulus. The VEP only takes seconds (theoretically) to measure the brains response, as long as the child is facing the screen.

The VA of a 2 month old and a 2 year old are completely different, but they are both normal for the age of the child.

How can you make Coomb's control cells in indirect anti-globulin test?

Preparing Coombs control cells is very easy. To about 10 drops of washed O Positive red cells add 5-6 drops of anti-D antisera. Incubate at 37C for 15 minutes. Wash 4 times then prepare a 3 to 5% cell suspension. To verify reaction, add two drops of AHG into test tube and one drop of newly prepared Coombs cells. Centrifuge on High for 15 seconds,,,should get 1 -2 + reaction.

Why do you have clear blood and not red?

Your blood appears blue as it flows through your veins beneath your skin, and turns red in the presence of oxygen, like when you cut yourself. The clear part of the blood is plasma, and is invisible until it is separated out.

How is a protein like a car engine?

It contains different proteins which work togethers as tiny machines to run the cell. A car engine has different parts and and they all do seprate jobs to make the engine run.

You tested positive for an unknown benzo and you ONLY take adderall what the heck?

obviously a false positive, adderall in no way resembles the atomic structure of any benzodiazepines. get another lab test ordered ASAP so they can't say you waited too long when you do get the right results this time.

What does vistiril show up as on drug screen?

Vistaril is a brand-name for the compound hydroxyzine. It is an antihistamine, and though it may cause sedation (similar to Benadryl, another antihistamine) it is not considered to be a "psychoactive" drug nor is it done on a drug triage screen.