Analyzing a sample of bone marrow may reveal what's causing your blood problem. Bone marrow biopsy is commonly used to diagnose a variety of blood problems â both noncancerous and cancerous â including blood cancers, such as leukemia, lymphoma and multiple myeloma. A bone marrow biopsy may also detect cancers that started elsewhere and traveled to the bone marrow.
why do i need a urine culture? Do you suspect you have a urinary tract infection or are you having difficulty or pain on urination and a frequent urge to urinate? A urine culture is usually ordered when a person has symptoms typical of a UTI such as pain or burning when urinating and frequent urges to urinate. Sometimes antibiotic therapy may be prescribed without requiring a urine culture for young women who display symptoms.
A urine culture is a test to find germs (such as bacteria) that can cause an infection. A sample of urine is added to a substance that promotes the growth of germs. If no germs grow, the culture is negative. If germs that can cause infection grow, the culture is positive. The type of germ may be identified using a microscope or chemical tests.