Clinical Laboratory Tests Guide

Detects anemia, active viral or bacterial infections, immune system disorders, and bleeding or clotting risks.

Diagnoses iron-deficiency anemia, distinguishes it from thalassemia trait, and monitors iron overload (hemochromatosis).

Gold standard for diagnosing prediabetes and diabetes, and monitoring glycemic control in diagnosed patients.

Evaluates baseline insulin regulation, detects acute hyperglycemia or hypoglycemia, and guides diabetes medications.

Detects cellular insulin resistance, pre-metabolic syndrome, and Polycystic Ovary Syndrome (PCOS) years before blood sugar rises.

Assesses cardiovascular risk, evaluates plaque buildup in arteries, and monitors response to statin therapy.

The definitive gold standard biomarker for diagnosing acute myocardial infarction (heart attack) and myocarditis.

Diagnoses congestive heart failure (CHF), differentiates cardiac breathlessness from lung disease, and monitors therapy.

Monitors oral anticoagulant therapy (Warfarin), assesses pre-surgical bleeding risk, and checks liver synthetic function.

Rapid rule-out test for Deep Vein Thrombosis (DVT), Pulmonary Embolism (PE), and Disseminated Intravascular Coagulation (DIC).

Evaluates liver cell inflammation, bile duct blockages, hepatic synthesis capacity, and medication toxicity.

Assesses glomerular filtration, detects acute kidney injury and chronic kidney disease (CKD), and monitors hydration.

Monitors cellular hydration, blood pressure regulation, cardiac rhythm electrical stability, and acid-base equilibrium.

The definitive laboratory markers for diagnosing acute pancreatitis, chronic pancreatic flares, and pancreatic duct obstruction.

Diagnoses hypothyroidism (underactive thyroid) and hyperthyroidism (overactive thyroid), and calibrates medication.

Investigates abnormal calcium levels, diagnoses primary and secondary hyperparathyroidism, and manages renal bone disease.

Screens for prostate cancer in men aged 50+, evaluates Benign Prostatic Hyperplasia (BPH), and tracks treatment response.

Confirms early pregnancy, calculates gestational age, rules out ectopic pregnancy, and screens gestational trophoblastic disease.

Investigates irregular periods, Polycystic Ovary Syndrome (PCOS), ovarian reserve, female/male infertility, and prolactinomas.

Diagnoses male hypogonadism, low libido, erectile dysfunction, and fatigue; evaluates hyperandrogenism and PCOS in females.

Assesses bone density health, calcium absorption capability, immune resilience, and unexplained bone or muscle aches.

Investigates macrocytic anemia, peripheral neuropathy (tingling, numbness in hands/feet), memory loss, and dietary adequacy.

Investigates macrocytic megaloblastic anemia alongside Vitamin B12; mandatory preconception screen to prevent neural tube defects.

Evaluates bone mineralization, parathyroid disease, muscle spasms, kidney stones, and cardiac conduction stability.

Detects urinary tract infections (UTIs), kidney filtration leaks (proteinuria), diabetes spills (glycosuria), and microscopic hematuria.

The earliest diagnostic biomarker for diabetic nephropathy and hypertensive renal damage years before standard dipstick detection.

Rapid laboratory confirmation of acute dengue fever; alerts clinicians to monitor platelet count to prevent hemorrhagic shock.

Serological diagnosis of Enteric Fever (Typhoid and Paratyphoid) in patients with prolonged step-ladder fever and GI distress.

Diagnoses acute and chronic Hepatitis B virus (HBV) infection; mandatory blood donor, prenatal, and pre-surgical safety screen.

Screens for colorectal cancer, unexplained iron deficiency from GI bleeding, intestinal parasitic infections, and amoebiasis.

Detects active systemic inflammation, tracks autoimmune disease flares (rheumatoid arthritis, lupus), and screens cardiac risk.

Screens for active or past Hepatitis C virus (HCV) infection; mandatory blood donor, pre-surgical, and high-risk health screen.

Early detection of Human Immunodeficiency Virus (HIV); shortens the diagnostic window period down to 2 to 3 weeks.

Rapid identification and species differentiation of acute malaria (*P. falciparum* vs. *P. vivax*) to initiate targeted antimalarial therapy.

Screening for Syphilis (*Treponema pallidum*); mandatory routine prenatal check to prevent congenital syphilis and stillbirth.

Confirms acute Chikungunya virus infection and differentiates it from Dengue and malaria in acute febrile polyarthralgia.

The premier gold-standard first-line screening test for Systemic Lupus Erythematosus (SLE), Scleroderma, Sjögren’s, and mixed connective tissue disease.

The definitive laboratory markers for diagnosing Rheumatoid Arthritis (RA), differentiating it from osteoarthritis, and predicting progressive joint damage.

Investigates Ankylosing Spondylitis (AS), axial spondyloarthritis, reactive arthritis (Reiter’s syndrome), and acute anterior uveitis.

Differentiates Type 1 Diabetes from Type 2 Diabetes; assesses residual pancreatic beta-cell insulin reserve; evaluates insulinomas.

Diagnoses Adrenal Insufficiency (Addison’s disease) and Cortisol Excess (Cushing’s syndrome); evaluates pituitary-adrenal axis.

Identifies autoimmune thyroiditis (Hashimoto’s hypothyroidism and Graves’ hyperthyroidism); evaluates subclinical hypothyroidism and recurrent miscarriage.

The premier clinical biomarker for assessing female ovarian egg reserve, planning fertility/IVF stimulation, and diagnosing PCOS.

Independent biomarker for premature heart attacks, ischemic strokes, blood clots (DVT/PE), and MTHFR gene / B-vitamin deficiencies.

Identifies genetically determined, non-lifestyle-related risk for premature heart attacks, strokes, and calcific aortic valve stenosis.

Pre-operative bleeding risk assessment; monitoring intravenous Unfractionated Heparin; diagnosing Hemophilia A & B and Lupus Anticoagulant.

Screens for atopic allergic disorders (allergic asthma, eczema, allergic rhinitis), parasitic helminth infections, and hyper-IgE syndromes.

Monitoring treatment response and post-operative recurrence in Ovarian Cancer; evaluation of suspicious pelvic masses in post-menopausal women.

Monitoring treatment response and detecting post-operative recurrence in Colorectal Cancer; surveillance for liver and lung metastases.

Routine surveillance for Hepatocellular Carcinoma (HCC / primary liver cancer) in cirrhosis and chronic Hepatitis B/C; germ cell cancer marker.

Definitive diagnosis of Urinary Tract Infections (UTIs), pyelonephritis, and recurrent cystitis; guides targeted antibiotic selection to prevent resistance.

Definitive microbiological diagnosis of Pulmonary Tuberculosis (TB) and rapid detection of Multi-Drug Resistant TB (MDR-TB).

Identifies active H. pylori bacterial colonization in the stomach; confirms cure after quadruple/triple eradication antibiotic therapy.

Differentiates severe acute bacterial sepsis from viral infections; guides antibiotic stewardship and safe antibiotic cessation in critical care.

Screens for primary maternal infections that cross the placenta to cause severe fetal malformations, microcephaly, congenital cataracts, or intrauterine fetal demise.

Surveillance, monitoring treatment response, and assessing resectability in Pancreatic Adenocarcinoma and Cholangiocarcinoma (bile duct cancer).

Definitive diagnostic tool for detecting Monoclonal Gammopathies (M-Spike), Multiple Myeloma, Smoldering Myeloma, and MGUS.

Diagnoses Rhabdomyolysis (massive muscle necrosis), statin-induced myopathy, polymyositis, muscular dystrophy, and crush injuries.

Investigates refractory hypokalemia, cardiac arrhythmias (Torsades de pointes), muscle twitches/cramps, and preeclampsia monitoring.

Definitive, rapid diagnosis and therapeutic monitoring of Diabetic Ketoacidosis (DKA) in Type 1 and Type 2 diabetes; superior to urine acetoacetate strips.

Mandatory prior to all blood transfusions, major surgical operations, blood/organ donation, and prenatal screening to prevent Rh incompatibility (Hemolytic Disease of the Fetus and Newborn).

Definitive diagnosis and carrier screening for Beta-Thalassemia Trait, Thalassemia Major, Sickle Cell Disease, and sickle cell trait; pre-marital and prenatal carrier counseling.

The premier gold-standard non-invasive screening test for Celiac Disease; differentiates autoimmune gluten enteropathy from non-celiac wheat allergy and IBS.

Critical care evaluation of respiratory failure, COPD exacerbations, severe asthma attacks, metabolic acidosis/alkalosis, and mechanical ventilator settings.

Screens for Latent Tuberculosis Infection (LTBI); mandatory for international visa immigration, healthcare employment, and before initiating biologic immunosuppressive therapy (anti-TNF agents).

Diagnoses Nephrotic Syndrome (>3.5 g/day), quantifies renal lupus nephritis damage, evaluates preeclampsia in pregnancy, and tracks chronic kidney disease progression.

Monitors disease activity, impending flares, and kidney involvement (Lupus Nephritis) in Systemic Lupus Erythematosus (SLE); evaluates post-streptococcal glomerulonephritis.

Ensures life-saving psychiatric and cardiac medications remain within safe therapeutic windows while preventing fatal organ toxicity.

Definitive diagnosis of severe bacterial gastroenteritis, bloody dysentery, and foodborne outbreaks; guides targeted antibiotic selection.

Non-specific cellular turnover and tissue breakdown marker; evaluates hemolytic anemia, lymphoma staging, testicular germ cell tumors, and pneumocystis pneumonia.

Investigates impaired wound healing, hair loss (alopecia), acrodermatitis enteropathica, immune deficiency (Zinc), and copper accumulation in Wilson’s Disease.

Critical follow-up whenever automated CBC flags abnormal flags; definitively identifies blast cells (leukemia), sickle cells, schistocytes (hemolytic uremic syndrome / TTP), and target cells.