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Learn how antibiotic-resistant UTI testing identifies ESBL, CRE, resistance genes, and antibiotic susceptibility, and how culture results guide treatment and follow-up.

Antibiotic-Resistant UTI Test: ESBL, CRE, Resistance Markers, and Culture Meaning

Learn what asymptomatic bacteriuria means, how a positive urine culture without UTI symptoms is interpreted, and when screening, treatment, or follow-up matters.

Asymptomatic Bacteriuria Test: Positive Culture Without Symptoms and When It Matters

Learn how bacteria in urine are interpreted using urinalysis, culture, colony count, symptoms, and sample quality, including when contamination or follow-up testing matters.

Bacteria in Urine Test: UTI, Contamination, Colony Count, and Culture Follow-Up

Learn how a catheter urine culture helps diagnose catheter-associated UTI, how samples are collected, and what colony counts, pyuria, resistance, and positive results mean.

Catheter Urine Culture Test: Catheter-Associated UTI and Culture Meaning

Learn how a chlamydia and gonorrhea urine NAAT works, how to collect first-catch urine, what positive or negative results mean, and when follow-up testing is needed.

Chlamydia and Gonorrhea Urine NAAT Test: STI Screening, Positive Result, and Meaning

Learn how to collect a clean-catch urine culture, reduce contamination, handle the sample correctly, and understand mixed flora, colony counts, repeat testing, and accurate results.

Clean-Catch Urine Culture Test: Sample Collection, Contamination, and Accurate Results

Diagnostics

Home Diagnostics Page 67

Learn how a pheochromocytoma and paraganglioma panel uses plasma or urine metanephrines, normetanephrine, catecholamines, and controlled collection to interpret abnormal results.

Pheochromocytoma and Paraganglioma Test Panel: Metanephrines, Normetanephrine, Catecholamines, and Results

Learn what plasma epinephrine, norepinephrine, and dopamine results mean, why collection posture matters, common causes of high values, and when metanephrine testing is preferred.

Plasma Catecholamines Test: Epinephrine, Norepinephrine, Dopamine, and Results

Learn how plasma free metanephrine and normetanephrine testing screens for pheochromocytoma and paraganglioma, why supine rest matters, and how high or borderline results are evaluated.

Plasma Free Metanephrines Test: Pheochromocytoma and Paraganglioma Screening, High Levels, and...

Learn what a high plasma normetanephrine result means, why supine rest matters, common false-positive causes, when clonidine testing is used, and how PPGL evaluation proceeds.

Plasma Normetanephrine Test: High Levels, Pheochromocytoma Screening, and Results

Learn how aldosterone, renin, potassium, and the ARR screen for primary aldosteronism, how medicines affect results, and when confirmation, CT, or adrenal vein sampling is needed.

Primary Aldosteronism Test Panel: Aldosterone, Renin, Potassium, ARR, and Results

Learn what high or low renin means, how PRA differs from direct renin, how aldosterone and potassium complete the pattern, and why medicines and posture affect the ARR.

Renin Blood Test: High, Low, Normal Range, Aldosterone Ratio, and Results

Learn how salivary cortisol reflects the daily rhythm, when late-night testing screens for Cushing syndrome, why stress panels have limits, and what high, low, or flat results may mean.

Salivary Cortisol Test: Cortisol Rhythm, Cushing Screening, Stress Hormone, and Results

Learn how a 24-hour urine catecholamines test measures epinephrine, norepinephrine, and dopamine, why collection quality matters, and when metanephrine testing is preferred.

Urine Catecholamines Test: Adrenal Tumor Screening and Results

Learn how 22q11.2 deletion syndrome genetic testing works, what positive, negative, prenatal, and family results mean, and which follow-up evaluations may be needed.

22q11.2 Deletion Syndrome Genetic Test: DiGeorge Syndrome and Results

Understand how amniocentesis tests fetal chromosomes and DNA, when it is offered, how the procedure works, what results mean, and the risks and alternatives.

Amniocentesis Genetic Test: Chromosomes, DNA, Diagnosis, and Results

Learn how cell-free DNA prenatal screening works, what low-chance, high-chance, no-call, and atypical results mean, and when CVS or amniocentesis is needed.

Cell-Free DNA (cfDNA) Prenatal Test: Fetal Chromosome Screening and Results

Learn how CFTR testing helps diagnose congenital absence of the vas deferens, how to read results, why partner testing matters, and which fertility options are available.

CFTR Genetic Test for Male Infertility: Congenital Absence of the Vas...

Learn how chorionic villus sampling provides early prenatal diagnosis, how CVS is performed, what normal, abnormal, uncertain, and mosaic results mean, and when amniocentesis may be needed.

Chorionic Villus Sampling (CVS) Genetic Test: Prenatal Diagnosis and Results

Understand Down syndrome genetic testing, including trisomy 21 screening, CVS and amniocentesis diagnosis, chromosome results, recurrence, and next steps.

Down Syndrome Genetic Test: Trisomy 21 Screening, Diagnosis, and Results

Learn how Edwards syndrome genetic testing screens for and diagnoses trisomy 18, how results are reported, and what they mean for care and recurrence.

Edwards Syndrome Genetic Test: Trisomy 18 Screening, Diagnosis, and Results

Understand embryo genetic testing in IVF, including PGT-A, PGT-M, PGT-SR, biopsy, mosaic results, limitations, embryo transfer, and prenatal confirmation.

Embryo Genetic Testing: IVF, Chromosomes, Mutations, and Results

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