Full Name: Lactate Dehydrogenase (LDH)
🧪 Single Test | Cellular Injury Marker

Overview:
Evaluates tissue damage and cell turnover. Elevated levels may be seen in hemolysis, malignancy, liver disease, and inflammation.

Fasting: Not required
Timing: Any time of day
Turnaround Time: 1–2 business days

Full Name: Blood Lead Level (Venous)
🧪 Single Test | Toxic Exposure Marker

Overview:
Measures lead exposure from environmental or occupational sources.

Fasting: Not required
Timing: Any time of day
Turnaround Time: 2–4 business days

Full Name: Lipase, Serum
🧪 Single Test | Pancreatic Enzyme

Overview:
Assesses pancreatic function. Commonly elevated in acute pancreatitis.

Fasting: Not required
Timing: Any time of day
Turnaround Time: 1–2 business days

Full Name: Lipid Panel with Reflex to Direct LDL
🧪 Grouped Test | Cholesterol Profile

Overview:
Evaluates cardiovascular risk. Direct LDL is reflexed when triglycerides are elevated or calculated LDL is unreliable.

Includes:
Total Cholesterol, HDL, LDL, Triglycerides

Fasting: 8–10 hours recommended
Timing: Morning draw preferred
Turnaround Time: 1–2 business days

Full Name: Lipoprotein-Associated Phospholipase A2 (Lp-PLA2)
🧪 Single Test | Vascular Inflammation Marker

Overview:
Evaluates vascular inflammation associated with plaque instability and cardiovascular risk.

Fasting: Not required
Timing: Any time of day
Turnaround Time: 2–4 business days

Full Name: Lipoprotein(a) [Lp(a)]
🧪 Single Test | Genetic Cardiovascular Risk Marker

Overview:
Assesses inherited cardiovascular risk independent of standard lipid levels.

Fasting: Not required
Timing: Any time of day
Turnaround Time: 2–4 business days

Full Name: Lithium, Serum Level
🧪 Single Test | Therapeutic Drug Monitoring

Overview:
Monitors lithium levels to ensure therapeutic dosing and prevent toxicity.

Fasting: Not required
Timing: Trough level preferred (12 hours post-dose)
Turnaround Time: 1–2 business days

Full Name: Luteinizing Hormone (LH)
🧪 Single Test | Pituitary Gonadotropin

Overview:
Assesses reproductive hormone regulation and pituitary function. Used in fertility and endocrine evaluations.

Fasting: Not required
Timing: Cycle-dependent when applicable
Turnaround Time: 1–3 business days

Full Name: Lyme Disease Total Antibody with Reflex IgG/IgM Immunoblot
🧪 Reflex Test | Tick-Borne Disease Screening

Overview:
Screens for Lyme disease exposure. Positive results reflex to confirmatory immunoblot testing.

Fasting: Not required
Timing: Any time of day
Turnaround Time: 3–5 business days

Full Name: Magnesium, Serum
🧪 Single Test | Electrolyte

Overview:
Measures circulating magnesium levels. Used to assess electrolyte balance and neuromuscular function.

Fasting: Not required
Timing: Any time of day
Turnaround Time: 1–2 business days

Full Name: Red Blood Cell Magnesium
🧪 Single Test | Intracellular Magnesium Marker

Overview:
Provides a longer-term assessment of magnesium status compared to serum levels.

Fasting: Not required
Timing: Any time of day
Turnaround Time: 3–5 business days

Full Name: Reticulocyte Count, Manual
🧪 Single Test | Bone Marrow Activity Marker

Overview:
Evaluates bone marrow response to anemia by measuring immature red blood cells.

Fasting: Not required
Timing: Any time of day
Turnaround Time: 1–2 business days