Lab tests

• A1C (HbA1c) TestThree months of blood sugar in one number: the A1C categories NIDDK and ARUP publish, and what skews them.
• ALT Blood TestThe most liver-specific enzyme: the ACG healthy range and why lab ranges may run higher.
• AMH TestAn ovarian reserve estimate: ARUP’s AMH ranges by age and what the test cannot tell you.
• ApoB TestA particle count behind LDL: what ApoB adds, and the categories ARUP and Labcorp publish.
• AST Blood TestA liver and muscle enzyme: why AST is read with ALT, and how the ACG grades elevations.
• CBC (Complete Blood Count)Red cells, white cells, platelets and hemoglobin: what a CBC counts and the adult ranges NHLBI publishes.
• CMP (Comprehensive Metabolic Panel)Fourteen results in one routine panel: what a CMP covers and where each number is explained.
• Cortisol TestThe stress hormone: why the time of day sets the range, and the conditions a cortisol test looks for.
• DHEA-S TestAn adrenal hormone that falls with age: ARUP ranges by decade and the conditions it helps look into.
• eGFR and Creatinine TestHow well the kidneys filter: the general eGFR bands MedlinePlus gives and why creatinine alone falls short.
• Estradiol TestThe main estrogen: why ranges move with the menstrual cycle, and which ARUP method suits which person.
• Fasting Glucose TestBlood sugar after an overnight fast: NIDDK’s three categories and why one result is not a diagnosis.
• Fasting Insulin TestInsulin after fasting: what it is used for, ARUP’s interval, and why it is always read with glucose.
• Ferritin TestStored iron: what ferritin shows, the ranges two national labs publish, and why inflammation can raise it.
• Free T4 TestThe active thyroid hormone: why free T4 is paired with TSH, and the ranges ARUP publishes.
• Free Testosterone TestThe unbound share of testosterone: how it is calculated, ARUP’s adult male range, and when it helps.
• FSH TestA fertility and menopause marker: FSH by menstrual cycle phase and after menopause, per ARUP.
• Homocysteine TestA B-vitamin and heart-risk marker: what raises homocysteine, and Labcorp’s ranges by age.
• hs-CRP TestInflammation and heart risk: how hs-CRP differs from standard CRP, and ARUP’s three risk bands.
• Iron Panel (Iron, TIBC)Serum iron, TIBC and transferrin saturation: what each part shows and the intervals ARUP publishes.
• LDL Cholesterol TestThe main cholesterol risk number: how LDL is measured and why two labs publish different cut points.
• LH TestThe ovulation signal: LH by menstrual cycle phase and in men, and how it pairs with FSH.
• Lipid PanelTotal cholesterol, LDL, HDL and triglycerides: what each means and the levels MedlinePlus and ARUP publish.
• Progesterone TestThe post-ovulation hormone: why timing in the menstrual cycle decides the range, per ARUP.
• Prolactin TestA pituitary hormone behind period and fertility changes: ARUP ranges and what can raise prolactin.
• PSA TestProstate screening: what PSA can and cannot show, ARUP’s interval, and the USPSTF position.
• SHBG TestThe carrier protein for sex hormones: what shifts SHBG, and ARUP’s adult ranges by sex and age.
• Testosterone TestTotal T: ARUP’s adult ranges, the AUA’s 300 ng/dL cut-off, and why timing matters.
• TPO Antibody TestThyroid autoantibodies: what TPO antibodies suggest, when they are tested, and ARUP’s interval.
• TSH TestThe usual first thyroid test: what TSH reflects, ARUP adult and pregnancy ranges, and what can skew it.
• Vitamin B12 TestB12 and nerve and blood health: when it is tested, ARUP’s interval, and the follow-up tests labs suggest.
• Vitamin D (25-Hydroxy) TestTwo published sets of cutoffs, side by side: what 25-hydroxy vitamin D shows and who is tested.

Looking for where to order a test? See the lab testing services on DiscoverMedica, and bring the questions from each page to your clinician.