Laboratory Testing

Yes, Staphylococcus aureus is positive for catalase because it produces the enzyme catalase, which helps to break down hydrogen peroxide into water and oxygen. This results in the production of bubbles when hydrogen peroxide is added to a colony of Staphylococcus aureus.

Casts in a urinalysis are cylindrical structures formed in the kidney tubules and shed into the urine. They can indicate various conditions, such as kidney disease, dehydration, or urinary tract infections, depending on their composition and appearance under a microscope. Types of casts include hyaline, granular, cellular, fatty, waxy, and mixed casts.

A red-top tube is typically used to collect blood for HFP (high-density lipoprotein and fibrinogen precipitation) testing.

Blood specimens are typically stored in the lab for a few days to a week after testing is completed, depending on the specific requirements of the test and the lab's protocols. Once the necessary analysis and reporting is done, the specimens are typically disposed of following laboratory safety guidelines.

Control groups are an essential part of the scientific method. They allow the scientist to compare two or more groups that are the same expect for one variable. Example, if a group of healthy adults takes a new weight loss drug, exercises 3 days a week, and loses 10 pounds, the scientists couldn't be certain that the drug was the cause of the weight loss unless they had another group (control group) of similar healthy adults that exercised 3 days a week and did NOT take the drug. If the control group also lost 10 pounds without the drug, then they know the drug was NOT the cause of the weight loss.

it depends upon the isi of the reagent

This enzyme is elevated in bacterial and fungal meningitis, malignancy, and subarachnoid hemorrhage.

The standard test is a 3 hour GTT (glucose tolerance test).

Sure. Considering the fact that doctors are under no obligation to prescribe any particular medicine, if they choose to require a urinalysis before prescribing something, you'd have to comply with their request or risk not getting the medication. Drug testing for compliance, narcotics contracts, and other controls help protect the prescriber's license and livelihood while allowing them to prescribe medications for patients in need.

EMG can determine whether a particular muscle is responding appropriately to stimulation, and whether a muscle remains inactive when not stimulated.

mpv

of course

careful handle the specimen by use gloves on hands.

use appron.

after performing the test wash your hands.

etc. etc.

Nothing. Thyroid levels are reported in terms of TSH, free T4 and total T4 level values.

In some hospitals there is a team of phlebotomist, whose main function is to draw blood specimen from indoor and outdoor patient.

A phlebotomist draws blood from either inpatients or outpatients. If you are an inpatient, you can have blood drawn by either a nurse, a Medical laboratory assistant(also called Medical Laboratory technician in the US), or an Medical Laboratory technologist. These people all have additional training other than just drawing blood. A phlebotomist is only trained in drawing blood, not other tasks.

For a comprehensive metabolic panel (CMP) test, fasting is typically not required. However, it is recommended to follow any specific instructions provided by your healthcare provider or the laboratory where the test will be conducted.

4:20

3 plus means 3 or more bacteria seen in one field of slide

Urinalysis code 81000

there is a significant or unexplained difference between the levels of sound heard between the two ears, or if the person being tested is unable to hear in the normal range of frequencies and volume.

It has something to do with white blood count

Reference values for lipase determination are laboratory- and method-specific. In general, normal results are usually less than 200 units/L (triolein methods by titration or turbidimetry).

Yes, if you're talking about a urine drug test, it shouldn't matter.

A wet mount can detect trichomonas, a parasite that causes trichomoniasis, a sexually transmitted disease. Reliability of the wet mount for detecting trichomoniasis depends on the examiner, and in most studies is at about 65%.

A wet mount showing more than 15 white blood cells per high powered field is strongly suggestive of a sexually transmitted disease, but is not definite. A wet mount without this high level of white blood cells is not a guarantee that the patient doesn't have an STD.

Don't, I repeat, don't use drugs. As simple as that.