Functional Lab Testing

1,3-Beta-D-Glucan Test measures blood fungal cell-wall glucan to help assess invasive fungal infection risk in high-risk patients and inform follow-up testing.

1,5-Anhydroglucitol measures short-term glucose swings over 1–2 weeks to help assess post-meal spikes and track day-to-day glycemic control more clearly now.

13C-Urea Blood test measures labeled carbon after urea intake to help assess H. pylori presence and inform evaluation of persistent dyspepsia symptoms quickly.

13C-Urea Breath test analyzes exhaled CO₂ after labeled urea to help assess H. pylori presence and inform noninvasive follow-up testing and care decisions.

21-Hydroxylase Antibodies checks autoimmune activity against adrenal enzymes to help assess Addison’s risk and inform follow-up of adrenal hormone function.

24-Hour Urine collection profiles total daily excretion to help evaluate kidney function, protein loss, electrolyte handling, and hormonal/metabolic patterns.

5'-Nucleotidase measures a liver/bile-duct enzyme to help evaluate cholestasis or liver injury and clarify the source of elevated alkaline phosphatase levels.

6-Minute Walk test estimates distance walked in 6 minutes to help assess functional capacity and monitor heart/lung disease status or rehab response over time.

Acoustic Reflectometry uses sound reflection to screen for middle-ear fluid and inform rapid in-clinic assessment of ear infection risk, especially in children.

Actigraphy records wrist movement over days to help characterize sleep–wake patterns, circadian rhythm issues, and sleep fragmentation in typical home settings.

Adiponectin test measures this fat-cell hormone to help evaluate insulin sensitivity and metabolic risk, informing cardiometabolic screening and diabetes risk.

ACTH test measures pituitary ACTH to help assess cortisol control and distinguish adrenal vs pituitary causes, informing targeted follow-up testing and imaging.

ALT test measures a liver enzyme that rises with injury to help assess liver health and monitor hepatitis, fatty liver, or medication stress trends during care.

ALT/AST Ratio compares two liver enzymes to help characterize liver injury patterns and inform evaluation of alcoholic liver disease, hepatitis, or fatty liver.

Albumin test measures a protein to help evaluate liver and kidney status, hydration, and nutrition, informing swelling assessment and monitoring over time.

Albumin-to-Globulin (A/G) Ratio compares blood proteins to help assess liver, kidney, and immune status and inform follow-up when inflammation is suspected.

Aldosterone test measures adrenal aldosterone to help assess high blood pressure, low potassium, and fluid balance and inform workup for adrenal causes early.

ALP test measures alkaline phosphatase to help evaluate bile flow, liver function, and bone turnover when jaundice, fatigue, or abnormal liver panels appear.

Alpha-1 Antitrypsin (A1AT) test measures A1AT to help assess genetic deficiency risk and inform evaluation of unexplained lung disease or liver dysfunction.

Alpha Linolenic Acid (ALA) test measures this plant omega-3 in blood to help evaluate omega-3 status, inflammatory balance, and cardiometabolic support needs.

Alpha-Synuclein Seed Amplification Assay (α-Syn-SAA) detects misfolded alpha-synuclein in CSF to help evaluate synucleinopathy likelihood and refine workup.

ADAS-Cog evaluates memory, language, and problem-solving to help monitor cognitive change over time and better track Alzheimer’s-related impairment progression.

Ambulatory monitoring (ABPM or Holter) records readings during daily life to help assess variability, intermittent symptoms, and response to treatment changes.

Amylase test measures a digestive enzyme to help assess pancreatic irritation or blockage and inform evaluation of abdominal pain or pancreatitis patterns.

Amyloid-Beta Peptide measures amyloid-beta in CSF or blood to help assess Alzheimer’s plaque biology and inform early evaluation of new cognitive changes.

Androstenedione measures this steroid hormone to help assess adrenal and gonadal function and inform evaluation of PCOS, hirsutism, or fertility concerns.

Angiography visualizes blood vessels with contrast to help assess narrowing or blockages and inform decisions in coronary or peripheral vascular disease cases.

AT1R-AAb measures angiotensin II receptor autoantibodies to help assess immune-driven vascular activation and monitor risk in transplant or pregnancy settings.