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Lab Tests Beginning With A
24 tests in the Lab Values reference begin with the letter A. Every name links to a page with its typical adult range in both unit systems, plain-language notes on high and low results, and preparation notes where they apply.
A B C D E F G H I L M N NUMBERS O P R S T U V W Z
| Test | Abbr. | Typical range (conventional) | Typical range (SI) |
|---|---|---|---|
| Absolute Eosinophil Count | AEC | 0.0–0.5 ×10³/µL | 0.0–0.5 ×10⁹/L |
| Absolute Lymphocyte Count | ALC | 1.0–4.0 ×10³/µL | 1.0–4.0 ×10⁹/L |
| Absolute Monocyte Count | AMC | 0.2–0.9 ×10³/µL | 0.2–0.9 ×10⁹/L |
| Absolute Neutrophil Count | ANC | 1.8–7.8 ×10³/µL | 1.8–7.8 ×10⁹/L |
| Activated Partial Thromboplastin Time | aPTT | 25–35 sec | 25–35 sec |
| Adrenocorticotropic Hormone | ACTH | 7.2–63.3 pg/mL | 1.6–13.9 pmol/L |
| Alanine Aminotransferase | ALT | 7–56 U/L | 7–56 U/L |
| Albumin | — | 3.5–5.0 g/dL | 35–50 g/L |
| Aldosterone | — | 4–31 ng/dL | 111–860 pmol/L |
| Alkaline Phosphatase | ALP | 40–130 U/L | 40–130 U/L |
| Alpha-1 Antitrypsin | AAT | 100–200 mg/dL | 20–38 µmol/L |
| Ammonia | — | 15–45 µg/dL | 11–32 µmol/L |
| Amylase | — | 30–110 U/L | 30–110 U/L |
| Androstenedione | — | Male 0.4–1.5; Female 0.4–2.0 ng/mL | Male 1.4–5.2; Female 1.4–7.0 nmol/L |
| Anion Gap | AG | 8–16 mEq/L | 8–16 mmol/L |
| Anti-Cyclic Citrullinated Peptide Antibodies | Anti-CCP | <20 U/mL | <20 U/mL |
| Anti-Müllerian Hormone | AMH | 1.0–3.0 ng/mL | 7.1–21.4 pmol/L |
| Antinuclear Antibodies | ANA | Negative | — |
| Antithrombin | AT | 80–120 % | 80–120 % |
| Apolipoprotein A1 | ApoA1 | Male 110–180; Female 120–190 mg/dL | Male 1.10–1.80; Female 1.20–1.90 g/L |
| Apolipoprotein B | ApoB | Desirable <90 mg/dL | Desirable <0.90 g/L |
| Arterial Bicarbonate | HCO3 | 22–28 mEq/L | 22–28 mmol/L |
| Arterial pH | pH | 7.35–7.45 | — |
| Aspartate Aminotransferase | AST | 10–40 U/L | 10–40 U/L |
Please note: Reference ranges vary between laboratories, and between the methods and instruments they use — the range printed on your own report is the one your result should be compared with. A result outside the range is not by itself a diagnosis, and a result inside it does not rule out illness. These pages are an educational summary, not medical advice: always discuss your results with the clinician who ordered them, who can interpret them in the context of your health and history.