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Solution titration in which the end point is read from the electrode-potential variations with the concentrations of potential determining ions. (Fro…

Method of using a polycrystalline powder and Rietveld refinement (LEAST SQUARES ANALYSIS) of X-RAY DIFFRACTION or NEUTRON DIFFRACTION. It circumvents…

Serologic tests in which a positive reaction manifested by visible CHEMICAL PRECIPITATION occurs when a soluble ANTIGEN reacts with its precipitins, …

Tests to determine whether or not an individual is pregnant.

Methods of detecting pregnancy by examining the levels of human chorionic gonadotropin (HCG) in plasma or urine.

The initial culturing of cells derived directly from fresh TISSUES.

A technique that labels specific sequences in whole chromosomes by in situ DNA chain elongation or PCR (polymerase chain reaction).

Activated partial thromboplastin time longer than the applicable reference interval.

Prothrombin time longer than the applicable laboratory reference interval.

Thrombin time longer than the applicable laboratory reference interval.

Ligand-binding assays that measure protein-protein, protein-small molecule, or protein-nucleic acid interactions using a very large set of capturing …

Procedures by which protein structure and function are changed or created in vitro by altering existing or synthesizing new structural genes that dir…

A method for determining points of contact between interacting proteins or binding sites of proteins to nucleic acids. Protein footprinting utilizes …

Methods for determining interaction between PROTEINS.

Clotting time of PLASMA recalcified in the presence of excess TISSUE THROMBOPLASTIN. Factors measured are FIBRINOGEN; PROTHROMBIN; FACTOR V; FACTOR V…

Spectroscopy technique which measures changes in organic compounds by tracking the spectral energy of absorption of HYDROGEN atoms.

Use of a pulse of X-rays or fast electrons to generate free radicals for spectroscopic examination.

White blood cells present in urine above the applicable microscopic or automated threshold.

An in vitro allergen radioimmunoassay in which allergens are coupled to an immunosorbent. The coupled allergens bind the IgE in the sera of patients …

Classic quantitative assay for detection of antigen-antibody reactions using a radioactively labeled substance (radioligand) either directly or indir…

Sensitive assay using radiolabeled ANTIGENS to detect specific ANTIBODIES in SERUM. The antigens are allowed to react with the serum and then precipi…

Radioimmunoassay of proteins using antibody coupled to an immunosorbent.

Quantitative determination of receptor (binding) proteins in body fluids or tissue using radioactively labeled binding reagents (e.g., antibodies, in…

Methods for performing three-dimensional measurement and motion analysis using stereoscopic radiographs.

Technique that utilizes low-stringency polymerase chain reaction (PCR) amplification with single primers of arbitrary sequence to generate strain-spe…

Diagnostic assays designed for use at the point-of-care (POC) that can be adapted for use in low-resource settings. These tests are low-cost, simple …

The time from the onset of a stimulus until a response is observed.

Methods used for detecting the amplified DNA products from the polymerase chain reaction as they accumulate instead of at the end of the reaction.

Red blood cell casts used as a ClinicalGraph target concept for lab_medicine / lab_finding.

Absolute lymphocyte count below the applicable laboratory reference range.