Bloodwork Blueprint: The Complete Hormone Panel Guide

Bloodwork is not optional. It is the single most important safety tool in hormone optimization, and it is the difference between optimizing your health and gambling with it. Every decision in hormone therapy, from initial dosing to ongoing adjustments to adding new compounds, should be informed by objective blood data rather than guesswork.

The challenge for most men is not willingness to get bloodwork. It is knowing what to test, when to test it, and how to interpretthe results. Standard lab reference ranges tell you whether you are “normal” in a statistical sense, but “normal” includes the bottom 2.5% of the population. Optimal is a narrower target within the reference range where symptoms resolve, performance improves, and safety markers remain clean.

This guide covers every marker in a comprehensive hormone optimization panel, explains what each marker measures and why it matters, provides optimal ranges alongside standard reference ranges, and tells you exactly when and how to draw blood for the most accurate results.

When and How to Draw Blood

The accuracy of your bloodwork depends heavily on when and how you draw it. Poor timing or preparation will give you misleading numbers that lead to incorrect dose adjustments.

Timing Relative to Your Protocol

• Testosterone trough: Draw blood the morning before your next scheduled injection. This captures your lowest testosterone point in the dosing cycle, which is the standard reference point for dose adjustments. For men injecting Monday/Wednesday/Friday, draw blood Friday morning before your Friday injection. For men injecting every 3.5 days (e.g., Monday morning and Thursday evening), draw blood Thursday morning
• Testosterone peak (optional): Draw blood 24-48 hours after an injection if your provider wants to see your peak level. This is less commonly needed but useful for assessing the full range of your testosterone fluctuation
• Peptides: If monitoring IGF-1 for GH secretagogues, draw at least 4-6 weeks after starting the peptide. Timing relative to the peptide dose is less critical for IGF-1 because it reflects a steady-state response rather than acute levels

Preparation

• Fasting: 8-12 hours fasted (water is fine) for accurate lipid panel and metabolic markers. This also provides the most consistent testosterone measurements, as eating can temporarily suppress testosterone
• Time of day: Before 10 AM when possible. Testosterone follows a diurnal pattern with levels highest in the morning. While TRT dampens this natural fluctuation, drawing in the morning provides the most consistent and comparable results
• Hydration: Drink adequate water the day before and morning of your draw. Dehydration artificially elevates hematocrit and hemoglobin, which can create false alarms in men on TRT
• Exercise: Avoid intense exercise for 24 hours before the draw, as strenuous activity can temporarily affect multiple markers including liver enzymes, CRP, and testosterone

The Core Hormone Panel

Total Testosterone

What it measures: The total amount of testosterone in your blood, including both bound (to SHBG and albumin) and unbound (free) testosterone.

• Standard reference range: 264-916 ng/dL (varies by lab and assay)
• Optimal range for TRT: 600-900 ng/dL at trough. Some men feel best in the 700-1000 range, but going above 900 at trough means your peaks may be supraphysiological
• Why it matters: Total T is the starting point for assessing your hormonal status, but it does not tell the full story. A man can have a total T of 600 and feel great or terrible depending on his SHBG and free T levels

Free Testosterone

What it measures: The 2-3% of testosterone that is not bound to any protein and is available to interact with androgen receptors throughout the body. This is the testosterone that actually does work.

• Standard reference range: Varies significantly by assay. Equilibrium dialysis (the gold standard) typically reports 6-25 pg/mL for adult men
• Optimal range: 15-25 pg/mL (equilibrium dialysis) or upper quartile of the reference range for whatever assay your lab uses
• Why it matters: Free T is arguably more clinically relevant than total T. A man with total T of 800 but very high SHBG might have free T equivalent to a man with total T of 400. Symptoms correlate more closely with free T than total T in most clinical observations

SHBG (Sex Hormone Binding Globulin)

What it measures: A protein produced by the liver that binds testosterone and makes it biologically inactive. Higher SHBG = less free testosterone available.

• Standard reference range: 10-57 nmol/L (varies by lab)
• Optimal range: 20-40 nmol/L. Below 20 may indicate insulin resistance or liver issues. Above 50 significantly reduces free testosterone
• Why it matters: SHBG is the key variable that determines the relationship between total T and free T. Men with high SHBG need higher total T to achieve adequate free T. Men with very low SHBG may need lower doses because more of their total T is free and active. SHBG is influenced by liver health, thyroid function, insulin sensitivity, and body fat

Estradiol (Sensitive Assay / LC-MS/MS)

What it measures: The primary form of estrogen in men, produced primarily through the aromatization of testosterone.

• Standard reference range: 8-35 pg/mL (sensitive assay)
• Optimal range: 20-35 pg/mL. The goal is a ratio: most practitioners target a total T to estradiol ratio of roughly 20:1 to 30:1
• Why it matters: Estradiol is essential for bone health, cardiovascular health, brain function, and libido in men. Both too high and too low are problematic. High estradiol can cause water retention, gynecomastia, emotional instability, and elevated blood pressure. Low estradiol causes joint pain, brain fog, loss of libido, and bone density loss

Critical Safety Markers

CBC (Complete Blood Count) with Differential

The CBC is the single most important safety panel for men on TRT.

• Hematocrit: The percentage of blood volume occupied by red blood cells. TRT stimulates erythropoiesis (red blood cell production), which increases hematocrit. Standard range: 38-50%. Action threshold: Above 52-54%, discuss therapeutic phlebotomy or dose reduction with your provider. Persistently elevated hematocrit increases blood viscosity and stroke/clot risk
• Hemoglobin: The oxygen-carrying protein in red blood cells. Rises in parallel with hematocrit on TRT. Standard range: 13.5-17.5 g/dL. Action threshold: Above 18 g/dL warrants intervention
• RBC count: Total red blood cell count. Elevated alongside hematocrit and hemoglobin on TRT. Monitored as a secondary confirmation
• WBC and differential: White blood cell count and breakdown. Not directly affected by TRT but useful for general health monitoring and detecting infections or immune issues
• Platelets: Clotting cells. Not typically affected by TRT but part of the standard CBC

Lipid Panel

TRT can affect lipid profiles, particularly in the first 6-12 months. Monitor closely:

• Total cholesterol: Context-dependent. Total cholesterol alone is not particularly informative
• LDL cholesterol: Standard range: below 100 mg/dL. TRT can modestly increase LDL in some men
• HDL cholesterol: Standard range: above 40 mg/dL, optimal above 50 mg/dL. TRT can modestly decrease HDL, though this is often offset by exercise and weight loss
• Triglycerides: Standard range: below 150 mg/dL. Elevated triglycerides indicate metabolic dysfunction. TRT often improves triglycerides over time
• ApoB (if available): The most accurate single marker for cardiovascular risk. Measures the number of atherogenic particles. Optimal: below 90 mg/dL, ideal below 80 mg/dL. More predictive than LDL cholesterol

PSA (Prostate-Specific Antigen)

What it measures: A protein produced by the prostate gland. Elevated levels can indicate prostate enlargement, inflammation, or cancer.

• Standard range: Below 4.0 ng/mL (age-dependent)
• Why it matters on TRT: TRT does not cause prostate cancer (this has been thoroughly debunked), but it can accelerate the growth of an existing prostate cancer. Baseline PSA before starting TRT is essential. Any increase greater than 1.4 ng/mL over 12 months or a doubling from baseline warrants urological evaluation
• Testing frequency: Baseline, then at 3 months, 6 months, 12 months, and annually thereafter. More frequently if any elevation is noted

Metabolic and Thyroid Markers

CMP (Comprehensive Metabolic Panel)

• Fasting glucose: Below 100 mg/dL (optimal below 90). Monitor for metabolic changes during TRT, GLP-1, and GH secretagogue use
• Liver enzymes (AST/ALT): Standard range: below 40 U/L. Mild elevations can occur with intense exercise. Persistently elevated levels warrant investigation. Important baseline before any multi-compound protocol
• Kidney markers (BUN/Creatinine): Standard markers for kidney function. Not typically affected by TRT but part of comprehensive monitoring
• Electrolytes: Sodium, potassium, calcium, chloride. Important baseline markers

HbA1c and Fasting Insulin

• HbA1c: Measures average blood glucose over 2-3 months. Optimal: below 5.5%, concerning above 5.7%, diabetic above 6.5%. Essential when running GLP-1 agonists to track metabolic improvement
• Fasting insulin: Optimal: 3-8 mIU/mL. Above 10 suggests insulin resistance. This marker catches metabolic dysfunction much earlier than fasting glucose, which can remain “normal” until insulin resistance is advanced

Thyroid Panel

• TSH: Standard range: 0.4-4.0 mIU/L. Optimal: 1.0-2.5 mIU/L. Thyroid dysfunction mimics many symptoms of low testosterone (fatigue, brain fog, weight gain, low libido). Always rule out thyroid issues before attributing symptoms solely to testosterone
• Free T3: The active thyroid hormone. Standard range: 2.3-4.2 pg/mL. Optimal: upper half of range
• Free T4: The storage form of thyroid hormone. Standard range: 0.8-1.8 ng/dL. Optimal: mid-range

Additional Markers for Specific Protocols

IGF-1 (GH Secretagogue / Peptide Users)

• What it measures: Insulin-like growth factor 1, the downstream mediator of growth hormone effects
• Standard reference range: Age-dependent, typically 100-300 ng/mL for adults
• When to test: Baseline before starting GH secretagogues (Ipamorelin, CJC-1295, Tesamorelin) and at 4-6 weeks to confirm response. Target the upper half of the age-adjusted reference range without exceeding it

Prolactin

• What it measures: A pituitary hormone that can be elevated by certain medications, pituitary tumors, or stress
• Standard range: 2-18 ng/mL for men
• Why it matters: Elevated prolactin suppresses GnRH and can cause sexual dysfunction, gynecomastia, and mood changes. Should be checked at baseline and if symptoms develop during TRT

hsCRP (High-Sensitivity C-Reactive Protein)

• What it measures: Systemic inflammation
• Standard range: Below 3.0 mg/L. Optimal: below 1.0 mg/L
• Why it matters: Inflammation is a key driver of chronic disease. This marker tracks whether your overall protocol is reducing or increasing systemic inflammation. GLP-1 agonists typically reduce hsCRP significantly

Testing Frequency Cheat Sheet

• Before starting any protocol: Full comprehensive panel (all markers above). This is your baseline. You will reference it forever
• 6-8 weeks after starting or changing dose: Core hormone panel + CBC + any compound-specific markers (e.g., IGF-1 for peptides)
• Every 3 months for the first year: Full panel
• Every 6 months once stable: Full panel
• Whenever symptoms change: Targeted testing based on symptoms
• When adding new compounds: Baseline markers relevant to that compound, then follow-up at 4-6 weeks

Affordable Testing Options

One of the most common barriers to regular bloodwork is cost, especially for men whose insurance does not cover optimization-focused panels or who prefer to order their own labs. Several direct-to-consumer lab companies allow you to order blood tests without a physician order at significantly lower cost than going through a traditional doctor visit:

• Marek Health: Offers comprehensive male hormone panels designed specifically for TRT monitoring, with competitive pricing and results interpretation
• Discounted Labs / Walk-In Labs: Direct-to-consumer lab ordering services that use Quest and Labcorp networks at discounted cash prices
• Your TRT clinic: Many telehealth TRT clinics include regular bloodwork in their service packages

The bottom line is that cost should not prevent you from getting bloodwork. A comprehensive hormone panel through a direct-to-consumer service costs less than a night out. The information it provides is worth orders of magnitude more than its price.

The Bottom Line

Bloodwork is not a chore. It is the navigation system for your entire optimization journey. Without it, you are driving blind, making decisions based on feelings rather than data, and risking health consequences that could have been easily prevented. With regular, comprehensive bloodwork and the ability to interpret your results, you have the information needed to make smart, safe adjustments to your protocol.

Get your baseline before you start anything. Retest at every adjustment. Track your trends over time. And never let a provider tell you that bloodwork is not necessary on TRT. It is the single most important thing you do.