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Laboratory Testing

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

8,512 Questions

Why can't blood group O receive blood from any other blood group other than O?

The plasma and red blood cells of a person's blood account fully for both A and B antigens and antibodies in some combination, and if both A antigens and A antibodies are present in the same mixture, they react negatively to each other. Blood transfusions only deal with the red blood cells, which hold the antigens, but O type blood has both antibodies in the plasma, which will react negatively to any red blood cells with antigens.

How do you get diagnosed with Down syndrome?

phsychiatrist

A Downs Syndrome diagnosis is confirmed with a genetic test, which looks for the extra chromosome (Downs chromosome) that is present.

Autistic diagnostic tests such as the CARS, CHAT, ADOS, as well as the Bayleys Scale and Monte Griffiths assesment can be carried out by a psychiatrist (because they rely on observation and parental imput in some parts) but I would recommend seeing a developmental paediatrician because they primarily deal with childrens developmental issues, plus they can along with occupational therapists look for other indicators of autism plus look at whether your child has another developmental problem other than Downs syndrome or autism.

They may also test your child's blood for things like lead levels (to rule out lead poisoning) haemogobin levels, and look at if your child may have Fragile X syndrome, or urine testing for metabolic problems or do an EEG to look for indications your child may have had seizures or something else that may have led to regression in your child's development, plus they may get several different tests like hearing tests to rule out deafness or something else that it could be so I would personally recommend a developmental paediatrician because they may take a more wholistic approach and are experts in the field. I hope this has helped you know what to look for. Good luck.

How can you get more iron in blood?

Take iron and vitamin C together. The presence of vitamin C can increase iron absorption by as much as 30 percent. Avoid taking an antacid at the same time you take iron. Stomach acid is needed to properly absorb iron.

Take iron while copper, manganese and molybdenum. They are required to complete the absorption of iron. Avoid using excessive amounts of zinc and vitamin E, which can interfere with iron absorption.

Taking vitamin A and B complex at the same time as iron. They are also required to complete the absorption of iron.

Why does a person with type A blood cannot receice type B blood?

the Letters A and B stand for the antigen present in the blood. If no antigen is present it is called type O. A (B) type blood would produce antibodies against A blood. For the body to except foreign blood (FB), the FB must not have the antigen that is different the the bodies antigen

so a person with type A blood can receive blood from a person of blood type A, or O

Does nicotine mask marijuana in a drug test?

No. A tobacco test looks for.. well... tobacco. A marijuana drug test looks for THC.

Oral test for nicotine?

yes,

Urine testing

Inexpensive strip test that detect cotinine ( nicotine metabolite) for about 2-6 days/ cutoff around 200 ng/ml.

More sensitive Lab urine tests such as GCMS (cutoff 5 ng/ml ) and ion pair reversed-phase chromatography (cutoff 2 ng/ml) detect for about 7-12 days.

Hair TestingNicotine and cotinine can be Lab detected in hair via GC/MS, with a detection cutoff around 2 ng/ml (nicotine). Hair tests have a much longer detection window than fluid tests up to 90 days.

Saliva Testing

Cotinine can be detected by quick, inexpensive saliva tests. Some saliva tests are extremely sensitive, detecting cotinine at concentrations as low as 1 ng/ml. Nicotine and cotinine can be detected in saliva with more sensitive and expensive procedures, such as HPLC. The detection window for these procedures is around 7-10 days.

Blood Testing

Nicotine and cotinine are detectable in the blood with laboratory testing, for about 7-12 days.

How long can alcohol be detected in urine test?

This is official.
I unit of alcohol equals a single measure of spirit, 1 glass of wine and half a pint of beer (assuming they're all 'normal' percentages of alcohol).
It takes 1 hour for 1 unit to get into the body's system (one and a half hours for females). It then takes a further 1 hour for the liver to process it (again, another one and a half for females).
Therefore, 5 units of alcohol (the recommended maximum a man is allowed to drink before he exceeds the 'drink-drive' limit) would take 6 hours for the liver to process and for it to leave the body and to be undetectable by a 'breathalyser'.
(The maximum for a female is 3 units (sorry girls!), which would also take 6 hours to clear).
So the answer to your question is one hour per unit consumed, plus one hour, for men and one and a half hours per unit, plus one and a half hours, for females.
Note :
It's not so much whether or not there are 'traces' of alcohol left in your body that's important, it's the irreparable damage done to the liver by drinking too much. (George Best, famous British footballer, died of from liver failure through alcohol abuse, for example). Drink in moderation - Be sensible!!

Can you get a false positive for methadone if you do not take it?

Yes and No. Methadone does not show up in a basic opiate test that is part of the standard pre-employment drug test but can be detected with "extended" test done by some companies/ rehab, etc..

Is it ok to take meds when fasting for blood tests?

You should always check with your doctor first (could interfere with the test) and if you can't get in touch with your doctor then phone a drug store and talk to the pharmacist and tell them what type of test you are going to have and that you are fasting and what type of medication can you take for your headache (you may not be able too.) I've heard that cutting a lime in half and rubbing it on your forehead will take a headache away. There is also a cream you can get over the counter at a drug store that you rub on your forehead and it truly does get rid of your headache (unless you are unfortunate enough to suffer from migraines.)

Does lorcet and Roxy show up the same in blood and urine tests?

Lortab is the brand name for Hydrocodone and acitomenephine. Percocet is the brand name for the drugs oxcycodone and acitomenephine when they are mixed together. On a chromatograph or laboratory type drug screen individual drugs will be detected. On litmus style or stick type drug test drugs are generally lumped into large categories such as canabanoids, opiates, amphetamines and so on. The smart thing to do is not to mess around with stuff you have never had a script for and in general obey the three day rule when you can. Another words do not do drugs 3 days before the test at the minimum.

How long are opiates detectable in your system?

"3 to 4 weeks"

actually, it's more like 3 to 4 days.

I am a heavy coffee drinker as in 8 to 10 pots of coffee a day and i am prescribed Percacet 30mg 2 times a day and 15mg 3 times a day. I have been told and have also done it on a drug screen that with the amount of coffee i drink in a day it will have an effect on how long opiates along with benzo's (as in xanax and clonazanam) stay in your system. In my case i had not had a percacet for 16 hrs or had a xanax for just as long and the 12 panel urine screen showed up negative for both. As far as the xanax the very next month i showed negative for xanax and i had taken my xanax only 6 hrs before i had to take my urine screen. The percacet was so light on that test that they sent me to the hospital for a blood test to find the levels that were in my system and they showed like they were supposed to show with all the right levels. Just be very careful with a urine screen. Blood screen can and will get you every time if you don't show on the urine screen.

Can they tell how many hydrocodone you are taking through a urine test?

No they can not, that is if it is a regular five panel test. If you are getting a high grade medical toxicological screen test than they can detect how much, but it is highly unlikely for you to be tested like this.

What at home can you drink to pass a drug test?

Water is good but there is really nothing you can drink or take that can get drugs out of your system any faster than time. It takes 30 days without use to clean your system of all traces.

How many days will nicotine show up in a blood test?

Different body types and metabolism will affect how long nicotine will remain in your system but typically around 90 days.

Why do you need to wipe off the first blood drop?

The first drop of blood is generally diluted with the sanitizer used to clean your arm/finger/etc. Therefore, to get an accurate test result, the first drop needs to be discarded and fresh blood needs to be collected.

What is a normal creatine kinase level for a 13 yr old boy?

CK is creatine kinase. An enzyme. Elevated amounts mean muscle damage. This can be caused by a heart attack, acute kidney failure and muscular dystrophy among others. Normal range is 60-400 IU/L.

How can you pass a drug test in 12 hours?

Drink plenty of water. I mean plenty. Drink so much that you urine has "0" color. No color indicates no specific gravity or a very low level. Worst case senerio is that your test would be considered " diluted ", but not altered. Meaning the person drinks has consumed to much water to have an acurate test conclusion for that time.

Can a o positive blood and a b positive blood make a b negative blood?

We are looking for the possible blood types of a baby.

Parental information:

  • Mother type O pos = can only be OO and Rh (++) or (+-)
  • Father type B pos = can be BB or BO and Rh (++) or (+-)
Baby receives one gene from each parent:
  • Baby is type BO (++) = Type B pos
  • Baby is type BO (+-) = Type B pos
  • Baby is type BO (--) = Type B neg
  • Baby is type OO (++) = Type O pos
  • Baby is type OO (+-) = Type O pos
  • Baby is type OO (--) = Type O neg
YES, the baby of O pos and B pos parents can be blood Type O neg.

How can you pass a drug screen while your pregnant?

Avoiding the consumption of drugs is always the best policy but if you MUST get high do so immediately after your doctor's visit giving you the most amount of time to detox naturally before you are asked to pee in a cup again. Drink LOTS of water. Keep in mind that a positive result could lead to you having your baby taken from you.
To pass school while you are pregnant, go and talk to your school's guidance councilor and speak with him/her about your condition. They may be able to offer you classes on balancing your baby with your schoolwork. Just do as you regularly would in school. Study, listen in class, and come organized. Best of luck to you and your baby, and God bless.

How long does it take for alcohol metabolites to completely leave your urine?

They stay in your urine for as long as they stay in your body. It's different for each substance you put in your body.

What causes globulin to be low?

a slightly low serum globulin probably has no significance, say 1.9 (where the low end of normal range is 2.2 or 2.3) unless associated with some other disease, such as kidney nephrosis or liver disease.