| Alanine Aminotransferase (ALT/SGPT) | ±15% or ±6 U/L (greater) | Routine Chemistry | 42 CFR §493.931 |
| Albumin | ±8% | Routine Chemistry | 42 CFR §493.931 |
| Alkaline Phosphatase | ±20% | Routine Chemistry | 42 CFR §493.931 |
| Amylase | ±20% | Routine Chemistry | 42 CFR §493.931 |
| Aspartate Aminotransferase (AST/SGOT) | ±15% or ±6 U/L (greater) | Routine Chemistry | 42 CFR §493.931 |
| Bilirubin, Total | ±20% or ±0.4 mg/dL (greater) | Routine Chemistry | 42 CFR §493.931 |
| Blood Gas pCO2 | ±8% or ±5 mm Hg (greater) | Routine Chemistry | 42 CFR §493.931 |
| Blood Gas pO2 | ±15% or ±15 mmHg (greater) | Routine Chemistry | 42 CFR §493.931 |
| Blood Gas pH | ±0.04 | Routine Chemistry | 42 CFR §493.931 |
| B-Natriuretic Peptide (BNP) | ±30% | Routine Chemistry | 42 CFR §493.931 |
| Pro B-Natriuretic Peptide (proBNP) | ±30% | Routine Chemistry | 42 CFR §493.931 |
| Calcium, Total | ±1.0 mg/dL | Routine Chemistry | 42 CFR §493.931 |
| Carbon Dioxide (CO2/Bicarbonate) | ±20% | Routine Chemistry | 42 CFR §493.931 |
| Chloride | ±5% | Routine Chemistry | 42 CFR §493.931 |
| Cholesterol, Total | ±10% | Routine Chemistry | 42 CFR §493.931 |
| Cholesterol, HDL | ±20% or ±6 mg/dL (greater) | Routine Chemistry | 42 CFR §493.931 |
| Cholesterol, LDL (direct) | ±20% | Routine Chemistry | 42 CFR §493.931 |
| Creatine Kinase (CK) | ±20% | Routine Chemistry | 42 CFR §493.931 |
| CK-MB Isoenzymes | ±25% or ±3 ng/mL (greater) or MB elevated (presence or absence) | Routine Chemistry | 42 CFR §493.931 |
| Creatinine | ±10% or ±0.2 mg/dL (greater) | Routine Chemistry | 42 CFR §493.931 |
| Ferritin | ±20% | Routine Chemistry | 42 CFR §493.931 |
| Gamma Glutamyl Transferase (GGT) | ±15% or ±5 U/L (greater) | Routine Chemistry | 42 CFR §493.931 |
| Glucose (excluding home use devices) | ±8% or ±6 mg/dL (greater) | Routine Chemistry | 42 CFR §493.931 |
| Hemoglobin A1c (HbA1c) | ±8% | Routine Chemistry | 42 CFR §493.931 |
| Iron, Total | ±15% | Routine Chemistry | 42 CFR §493.931 |
| Lactate Dehydrogenase (LDH) | ±15% | Routine Chemistry | 42 CFR §493.931 |
| Magnesium | ±15% | Routine Chemistry | 42 CFR §493.931 |
| Phosphorus | ±10% or ±0.3 mg/dL (greater) | Routine Chemistry | 42 CFR §493.931 |
| Potassium | ±0.3 mmol/L | Routine Chemistry | 42 CFR §493.931 |
| Prostate Specific Antigen (PSA), Total | ±20% or ±0.2 ng/mL (greater) | Routine Chemistry | 42 CFR §493.931 |
| Sodium | ±4 mmol/L | Routine Chemistry | 42 CFR §493.931 |
| Total Iron Binding Capacity (TIBC) | ±20% | Routine Chemistry | 42 CFR §493.931 |
| Total Protein | ±8% | Routine Chemistry | 42 CFR §493.931 |
| Triglycerides | ±15% | Routine Chemistry | 42 CFR §493.931 |
| Troponin I | ±30% or ±0.9 ng/mL (greater) | Routine Chemistry | 42 CFR §493.931 |
| Troponin T | ±30% or ±0.2 ng/mL (greater) | Routine Chemistry | 42 CFR §493.931 |
| Urea Nitrogen (BUN) | ±9% or ±2 mg/dL (greater) | Routine Chemistry | 42 CFR §493.931 |
| Uric Acid | ±10% | Routine Chemistry | 42 CFR §493.931 |
| Alpha-1 Antitrypsin | ±20% or positive or negative | General Immunology | 42 CFR §493.927 |
| Alpha-Fetoprotein (AFP, tumor marker) | ±20% or positive or negative | General Immunology | 42 CFR §493.927 |
| Antinuclear Antibody (ANA) | ±2 dilutions or positive or negative | General Immunology | 42 CFR §493.927 |
| Antistreptolysin O (ASO) | ±2 dilutions or positive or negative | General Immunology | 42 CFR §493.927 |
| Anti-HIV | Reactive (positive) or nonreactive (negative) | General Immunology | 42 CFR §493.927 |
| Complement C3 | ±15% | General Immunology | 42 CFR §493.927 |
| Complement C4 | ±20% or ±5 mg/dL (greater) | General Immunology | 42 CFR §493.927 |
| C-Reactive Protein (hs-CRP) | ±30% or ±1 mg/L (greater) | General Immunology | 42 CFR §493.927 |
| HBsAg (Hepatitis B Surface Antigen) | Reactive (positive) or nonreactive (negative) | General Immunology | 42 CFR §493.927 |
| Anti-HBc (Hepatitis B Core Antibody) | Reactive (positive) or nonreactive (negative) | General Immunology | 42 CFR §493.927 |
| HBeAg (Hepatitis B e Antigen) | Reactive (positive) or nonreactive (negative) | General Immunology | 42 CFR §493.927 |
| Anti-HBs (Hepatitis B Surface Antibody) | Reactive (positive) or nonreactive (negative) | General Immunology | 42 CFR §493.927 |
| Anti-HCV (Hepatitis C Antibody) | Reactive (positive) or nonreactive (negative) | General Immunology | 42 CFR §493.927 |
| IgA | ±20% | General Immunology | 42 CFR §493.927 |
| IgE | ±20% | General Immunology | 42 CFR §493.927 |
| IgG | ±20% | General Immunology | 42 CFR §493.927 |
| IgM | ±20% | General Immunology | 42 CFR §493.927 |
| Infectious Mononucleosis | ±2 dilutions or positive or negative | General Immunology | 42 CFR §493.927 |
| Rheumatoid Factor (RF) | ±2 dilutions or positive or negative | General Immunology | 42 CFR §493.927 |
| Rubella | ±2 dilutions or positive or negative or immune or nonimmune | General Immunology | 42 CFR §493.927 |
| Cancer Antigen 125 (CA-125) | ±20% | Endocrinology | 42 CFR §493.933 |
| Carcinoembryonic Antigen (CEA) | ±15% or ±1 ng/dL (greater) | Endocrinology | 42 CFR §493.933 |
| Cortisol | ±20% | Endocrinology | 42 CFR §493.933 |
| Estradiol | ±30% | Endocrinology | 42 CFR §493.933 |
| Folate, Serum | ±30% or ±1 ng/mL (greater) | Endocrinology | 42 CFR §493.933 |
| Follicle Stimulating Hormone (FSH) | ±18% or ±2 IU/L (greater) | Endocrinology | 42 CFR §493.933 |
| Free Thyroxine (Free T4) | ±15% or ±0.3 ng/dL (greater) | Endocrinology | 42 CFR §493.933 |
| Human Chorionic Gonadotropin (hCG) | ±18% or ±3 mIU/mL (greater) or positive or negative | Endocrinology | 42 CFR §493.933 |
| Luteinizing Hormone (LH) | ±20% | Endocrinology | 42 CFR §493.933 |
| Parathyroid Hormone (PTH) | ±30% | Endocrinology | 42 CFR §493.933 |
| Progesterone | ±25% | Endocrinology | 42 CFR §493.933 |
| Prolactin | ±20% | Endocrinology | 42 CFR §493.933 |
| Testosterone | ±30% or ±20 ng/dL (greater) | Endocrinology | 42 CFR §493.933 |
| T3 Uptake | ±18% | Endocrinology | 42 CFR §493.933 |
| Triiodothyronine (T3) | ±30% | Endocrinology | 42 CFR §493.933 |
| Thyroid Stimulating Hormone (TSH) | ±20% or ±0.2 mIU/L (greater) | Endocrinology | 42 CFR §493.933 |
| Thyroxine (T4) | ±20% or ±1.0 mcg/dL (greater) | Endocrinology | 42 CFR §493.933 |
| Vitamin B12 | ±25% or ±30 pg/mL (greater) | Endocrinology | 42 CFR §493.933 |
| Acetaminophen | ±15% or ±3 mcg/mL (greater) | Toxicology | 42 CFR §493.937 |
| Alcohol, Blood (Ethanol) | ±20% | Toxicology | 42 CFR §493.937 |
| Blood Lead | ±10% or ±2 mcg/dL (greater) | Toxicology | 42 CFR §493.937 |
| Carbamazepine | ±20% or ±1.0 mcg/mL (greater) | Toxicology | 42 CFR §493.937 |
| Digoxin | ±15% or ±0.2 ng/mL (greater) | Toxicology | 42 CFR §493.937 |
| Gentamicin | ±25% | Toxicology | 42 CFR §493.937 |
| Lithium | ±15% or ±0.3 mmol/L (greater) | Toxicology | 42 CFR §493.937 |
| Phenobarbital | ±15% or ±2 mcg/mL (greater) | Toxicology | 42 CFR §493.937 |
| Phenytoin (Dilantin) | ±15% or ±2 mcg/mL (greater) | Toxicology | 42 CFR §493.937 |
| Salicylate | ±15% or ±2 mcg/mL (greater) | Toxicology | 42 CFR §493.937 |
| Theophylline | ±20% | Toxicology | 42 CFR §493.937 |
| CBC - WBC (White Blood Cell Count) | ±15% | Hematology | 42 CFR §493.941 |
| CBC - RBC (Red Blood Cell Count) | ±6% | Hematology | 42 CFR §493.941 |
| CBC - Hemoglobin | ±7% or ±1.0 g/dL (greater) | Hematology | 42 CFR §493.941 |
| CBC - Hematocrit | ±6% | Hematology | 42 CFR §493.941 |
| CBC - MCV (Mean Corpuscular Volume) | ±7% | Hematology | 42 CFR §493.941 |
| CBC - MCHC (Mean Corpuscular Hemoglobin Conc.) | ±8% | Hematology | 42 CFR §493.941 |
| CBC - Platelet Count | ±25% | Hematology | 42 CFR §493.941 |
| Differential - Neutrophils (Granulocytes) | ±3 percentage points or ±14% (greater) | Hematology | 42 CFR §493.941 |
| Differential - Lymphocytes | ±3 percentage points or ±14% (greater) | Hematology | 42 CFR §493.941 |
| Differential - Monocytes | ±3 percentage points or ±14% (greater) | Hematology | 42 CFR §493.941 |
| Differential - Eosinophils | ±3 percentage points or ±14% (greater) | Hematology | 42 CFR §493.941 |
| Differential - Basophils | ±3 percentage points or ±14% (greater) | Hematology | 42 CFR §493.941 |
| Fibrinogen | ±20% | Hematology | 42 CFR §493.941 |
| Reticulocyte Count | ±3 percentage points or ±30% (greater) | Hematology | 42 CFR §493.941 |
| Prothrombin Time (PT) | ±15% | Coagulation | 42 CFR §493.941 |
| INR (International Normalized Ratio) | ±15% | Coagulation | 42 CFR §493.941 |
| Partial Thromboplastin Time (PTT/aPTT) | ±15% | Coagulation | 42 CFR §493.941 |
| D-Dimer | Positive or negative; no fixed CLIA % TEa | Coagulation | 42 CFR §493.941 |
| ABO Group | 100% accuracy | Immunohematology | 42 CFR §493.959 |
| Rh Group (D typing) | 100% accuracy | Immunohematology | 42 CFR §493.959 |
| Antibody Detection (Unexpected Antibodies) | 100% accuracy | Immunohematology | 42 CFR §493.959 |
| Antibody Identification | 100% accuracy | Immunohematology | 42 CFR §493.959 |
| Compatibility Testing (Crossmatch) | 100% accuracy | Immunohematology | 42 CFR §493.959 |
| Urinalysis - Qualitative (dipstick) | Positive or negative; ±1 graduation (semi-quantitative) | Urinalysis | 42 CFR §493.931 |