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Laboratory Testing
Before a doctor can diagnose a patient, laboratory tests such as blood work are required.
8,512 Questions
What are the levels for Hair drug test?
Analyte Screen Cutoff Confirmation Cutoff
Amphetamines
Cocaine
Opiates
PCP
THC
THC-COOH
300 pg/mg
300 pg/mg
500 pg/mg
300 pg/mg
N/A
1 pg/mg
300 pg/mg
300 pg/mg
500 pg/mg
300 pg/mg
5 pg/mg
0.1 pg/mg
A biosensor is an analytical device which converts a biological response into an electrical signal. The term 'biosensor' is often used to cover sensor devices used in order to determine the concentration of substances or other parameters of biological interest even where they do not utilise a biological system directly for example blood oxygen sats measurments taken by light absorbance measuments.
Answer
A biosensor is an analytical device which consists of 1) biologically sensitive element (frequently and enzyme or antibody). 2)a transducer to transform the signal into another form (eg colour change resulting from an enzyme reaction becomes an electrical signal) 3)An output device e.g. screen/printer.
Almost every dipstick test used by doctors and avalible at your chemist's can be considered a simple form of biosensor. Biosensors relying on colour changes are commonly avalible in the UK over the counter as pregnancy tests and cholesterol test strips the analytes being HCG and Total and/or HLD cholesterol depending on manufacturer.
Biosensors offer the potential for point of care testing as they can be portable and easy to use. The most sucessful biosensor to date is the glucose biosensor used be many diabetics to monitor blood glucose levels. The glucose biosensor is an amperometric device relying on the current generated when glucose oxidase reduces FAD to FADH2 and the resulting FADH2 is then oxidised by an electrode held at constant +ve voltage.
The glucose sensor is sucessful as there is a relativly large concentration of glucose in blood plasma, other biologically relevant analytes are not so abundant and amplification of the signal must be achieved. Amplification by carrier systems for electons and membrane bound electron transfer pathways are common research themes.
On a drug screen when soma test positive what class does it come under?
It shows a false positive as Benzodiazepines!!
Can a O positive and B negative produce baby A negative?
Yes. The long answer is to distinguish phenotype (the blood type A, B, AB, O) from genotype (what pair of alleles compose your genes (AA, AO, BB, BO, AB, OO).
The same goes for Rh factor (positive or negative), although the theory is more complex. The Rh + is usually taken to mean positive for the D antigen.
So parents having O (must be OA genotype) and B (must be BO genotype) blood can have a child with A ( will be AO genotype).
Can you pass an etg after 43hrs?
It depends on wath type of drugs you use. if u use weed. drink as many milk and water as you can. if u use speed. throw up once.
How long would it take 2 drinks to leave the bloodstream?
Less then two hours as soon as you drink it. It begins a process of going into the stomach and being absorbed into the bloodstream going through the brain and processed through and out the body. They say an average is one beer is one hour. So the best answer is less then two hours but more then one. Your metabolism determines how fast it goes through the body and processes the gogo juice.
You have 25 to 35 puss cell in your urine sample What does it mean?
it means that u have urinary tract infection.... contact ur doctor to get appropriate treatment
What is a t4 free on a blood test?
A doctor orders a free T4 blood test (or FT4) to see if your thyroid gland is working properly. The "free" part refers to released thyroxine in your system.
The free T4 part actually means it is only measuring the unbound T4 (which is usable) the free T4 blood test is better than just the T4, you need to know how much free T4 (unbound and usable) hormone there is in your body to help determine whether you are suffering from thyroid disease.
How do you test a person to see if they have Zellweger syndrome?
You can't test for it but look for these symptoms etc.:
Zellweger syndrome is an inherited peroxisomal metabolic disorder. Peroxisomes are found in almost all body cells and are responsible for many important cell processes. Zellweger syndrome causes a defect in the peroxisomes, which affects the body severely.
Zellweger syndrome is estimated to occur in 1 of every 50,000 to 100,000 births. It affects both males and females and is present at birth.
Symptoms
Zellweger syndrome affects many parts of the body, including:
- Head and face - enlarged head, high forehead, large anterior fontanelle ("soft spot"), malformed ear lobes, flat-looking face
- Brain and nervous system - abnormal brain development leads to seizures, hearing and vision impairment, profound mental retardation and developmental delay, diminished or absent reflexes
- Liver - enlarged liver with impaired function, jaundice
- Kidneys - renal cysts, hydronephrosis
- Muscles and bones - very low muscle tone (hypotonia), bone defects in the hands, legs, and feet
Diagnosis
The distinctive shape of the head and face of the infant born with Zellweger syndrome provides a clue to the diagnosis. Zellweger syndrome causes the build-up of very-long-chain fatty acids (VLCFA), so a test for VLCFA can help confirm the diagnosis. This and other highly specialized biochemical and genetic tests can be done at certain testing centers.
Treatment
Despite the progress research has made in understanding Zellweger syndrome, no cure yet exists, and infants born with the disorder usually die within the first year of life. Medical care focuses on treating the symptoms present, such as liver dysfunction and seizures. Changing the amount of VLCFA in the diet has not been shown to be an effective treatment.
In addition, physical, occupational, and speech therapy can assist with feeding and comfort issues.
Genetic counseling
Parents should receive genetic counseling, since Zellweger syndrome is inherited in a autosomal recessive manner. This means that both parents are carriers of the defective gene, and each future child has a 25% chance of being born with Zellweger syndrome.
