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D-Dimer is one of the measurable by-product of activation of the fibrinolytic system. Quantitation of D-Dimer assesses fibrinolytic activation and intravascular thrombosis. D-Dimer is of particular value in excluding the diagnosis of venous thromboembolism amount patients at high risk.

D-Dimer is one of the measurable by-product of activation of the fibrinolytic system. Quantitation of D-Dimer assesses fibrinolytic activation and intravascular thrombosis. D-Dimer is of particular value in excluding the diagnosis of venous thromboembolism amount patients at high risk.

DHEA is a weakly androgenic steroid that is useful when congenital adrenal hyperplasia is suspected. It is also useful
in determining the source of androgens in hyperandrogenic conditions, such as polycystic ovarian syndrome and adrenal tumors.

DHEA-S is the sulfated form of DHEA, the precursor of testosterone and estrogen. Many hirsute women have elevated DHEA-S with levels of other androgens within reference ranges. Dexamethasone supression of DHEA-S can be used to differentiate tumors from adrenal hyperplasia.

Dengue hemorrhagic fever and dengue shock syndrome are caused by infection of a RNA flavivirus transmitted by a mosquito vector. Paired acute
and convalescent specimens that exhibit a significant change in titer are useful to confirm clinical diagnosis of infection.

Dengue hemorrhagic fever and dengue shock syndrome are caused by infection of a RNA flavivirus transmitted by a mosquito vector. Paired acute
and convalescent specimens that exhibit a significant change in titer are useful to confirm clinical diagnosis of infection.

Dengue virus is a globally distributed Flavivirus with 4 distinct serotypes (DV-1, 2, 3, 4), is primarily transmitted by the Aedes aegypti mosquito and is prevalent throughout the tropical and subtropical regions of the world. Seroconversion occurs approximately 3 to 7 days following exposure and, therefore, testing of acute and convalescent sera for IgG antibodies may be necessary to make the diagnosis.

This test is used for the qualitative detection of dengue virus NS1 antigen as an aid to the diagnosis of acute dengue infection.
NS1 antigen is a nonstructural protein found in infected patients from 1st day of fever upto 9 days after the onset of fever.

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Digoxin is a cardiac glycoside derived from the digitalis plant. It is used to treat congestive heart failure and atrial dysrhythmias. Digoxin levels are monitored to assure that adequate therapeutic levels are achieved and to avoid toxicity.

DHT is a potent androgen derived from testosterone via
5-alpha-reductase activity. 5-alpha-reductase deficiency results in incompletely virilized males (phenotypic females). This diagnosis is supported by an elevated ratio of testosterone to DHT.

Diphtheria is an acute, contagious, febrile illness caused by the bacterium Corynebacterium diphtheriae. This assay aids in evaluation of immune status
of patient with regards to this pathogen.

LDL cholesterol is a key factor in the pathogenesis of atherosclerosis and coronary artery disease (CAD), while HDL cholesterol has often been observed to have a protective effect. Even within the normal range of total cholesterol concentrations, an increase in LDL cholesterol can produce
an associated increased risk for CAD. LDL cholesterol binds to receptor sites on macrophages in blood vessel walls inciting several changes to the blood wall which enhance antherosclerotic plaque development.

Screening for Down syndrome and trisomy 18 at 10-14 weeks gestation.

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