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Indicators

Phenylalanine

An essential aromatic amino acid in humans (provided by food), Phenylalanine plays a key role in the biosynthesis of other amino acids and is important in the structure and function of many proteins and enzymes. Phenylalanine is converted to tyrosine, used in the biosynthesis of dopamine and norepinephrine neurotransmitters. The L-form of Phenylalanine is incorporated into proteins, while the D-form acts as a painkiller. Absorption of ultraviolet radiation by Phenylalanine is used to quantify protein amounts. (NCI04)

Article

Plasma versus whole blood multiplex droplet digital PCR for pathogen detection in ICU patients with clinically suspected sepsis: a prospective multicenter cohort study.

Research record from Int J Infect Dis, 2026-07-27. PMID 42508520.

Tests

Prealbumin Blood Test

A prealbumin blood test measures prealbumin levels in your blood. Prealbumin is a protein that's made in your liver and is found in your blood. Prealbumin is used to make other proteins and helps carry thyroid hormones and vitamin A through your bloodstream. It also helps control how your body uses energy.

For everyone & professionals

Indicators

PSA

Prostate-specific antigen — a prostate tissue protein whose blood level rises in prostate cancer and in common benign conditions.

Article

Random PCR-based nanopore whole-genome sequencing enables pre-positivity detection of fungal bloodstream infections.

Research record from Microbiol Spectr, 2026-08-21. PMID 42627185.

Article

Rapid and accurate diagnosis of bloodstream infections: A multiplex real-time PCR assay with selective microbial enrichment for direct whole-blood detection and positive blood culture confirmation.

Research record from J Microbiol Immunol Infect, 2026-09-18. PMID 42763279.

Article

Recommendations for establishing metrological traceability for in vitro diagnostic measurement procedures intended to be used for whole blood samples.

Research record from Clin Chim Acta, 2026-03-12. PMID 41831665.

Article

Sensitive and Rapid Dual One-Tube Recombinase Aided PCR Assays for the Simultaneous Detection of Cytomegalovirus, Epstein-Barr Virus, Human Herpesvirus 6, and Herpes Simplex Virus 1/2 in Whole Blood From Children Undergoing Hematopoietic Stem Cell Transplantation.

Research record from J Med Virol, 2026-04-01. PMID 41944344.

Glossary Term

Specimen

A part of a thing, or of several things, taken to demonstrate or to determine the character of the whole, e.g. a substance, or portion of material obtained for use in testing, examination, or study; particularly, a preparation of tissue or bodily fluid taken for examination or diagnosis.

Extraction Methodology

Glossary Term

T-Score

A method for converting an individual score into a standard form. While similar to a z-score, t-score is used when the conversion is made without knowledge of the population standard deviation and mean.

Performance Metrics

Tests

Therapeutic Drug Monitoring

Therapeutic drug monitoring (TDM) is testing that measures the amount of certain medicines in your blood. It checks whether the amount of medicine you take is safe and effective.

For everyone & professionals

Article

Unclassified Inborn Errors of Immunity Patients without any Pathogenic Variant in Targeted Next-Generation Sequencing: Long-Term Follow-up and Whole Exome Sequencing Results.

Research record from J Clin Immunol, 2026-03-31. PMID 41917218.

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