Home / What is: A Lab Draw
What is:What is a lab draw?
The short answerA lab draw is a quick blood test. A nurse takes a small sample from your arm, and the lab measures markers like hormones and metabolic health. At Onus, lab draws are by appointment at all 7 locations, no fasting needed, and a nurse practitioner reviews your results with you over telehealth, usually within 2 to 5 days.
Updated November 2026 · 3-minute read
In 30 seconds
A lab draw, simplified
A small blood sample
A nurse draws a little blood from your arm in a few minutes.
No fasting
Eat and drink normally before your appointment.
Results in days
Most results are back in 2 to 5 days.
Reviewed with you
A nurse practitioner walks you through them over telehealth.
Options at Onus
Which lab panels does Onus offer?
A panel is a set of tests run from one blood sample. Your provider helps you choose the one that fits your goals.
Basic Lab Panel
A focused set of key markers, a good first look at where your health stands today.
Comprehensive Lab Panel
A broader set of markers for a more complete view, often used to guide hormone and longevity plans.
BHRT + TRT labs
Hormone labs include a metabolic panel, free testosterone, PSA levels, and other biomarkers, reviewed with a nurse practitioner.
Step by step
How does a lab draw work at Onus?
Book
Lab draws are by appointment at any of our 7 locations.
Quick draw
A nurse draws a small blood sample from your arm.
Lab results
Results usually come back in 2 to 5 days.
Telehealth review
A nurse practitioner reviews your results and options with you.
Before you go
How do I prepare for a lab draw?
No fasting
You can eat and drink normally beforehand.
Drink water
Being well hydrated can make the draw easier.
Easy sleeves
Wear sleeves that roll up above your elbow.
Bring your list
Know the medications and supplements you take.
Testing testosterone? Levels are usually highest in the morning, so an early appointment is often best.
Is it a fit?
Who should get a lab draw?
A good first step if you
- Are curious about hormone therapy, BHRT, or TRT
- Have symptoms like low energy, poor sleep, or low libido
- Want a baseline before starting a longevity plan
- Are already on a plan and due for follow-up labs
Let us know ahead of time if you
- Have felt faint during a blood draw before
- Take blood thinners
- Have had trouble with blood draws in the past
Myth vs. fact
Common lab draw myths
MythYou always have to fast.
FactOnus lab draws don't require fasting.
MythResults take weeks.
FactMost results are back in 2 to 5 days.
MythYou get a printout and you're on your own.
FactA nurse practitioner reviews your results with you over telehealth.
MythLabs only matter when you're sick.
FactA baseline helps you and your provider track changes over time.
Pricing
How much does a lab draw cost?
Pricing depends on the panel. We confirm your price when you book.
| Panel | Details | Price |
|---|---|---|
| Hormone labs (BHRT / TRT) | Varies by age and gender | $150 - $170 |
| Longevity Lab Panel | New clients save $50 | $50 off |
Key terms
Lab terms, defined
- Lab draw
- Taking a small blood sample to send to a lab for testing.
- Panel
- A group of tests run from the same blood sample.
- Biomarker
- Something measurable in your blood, like a hormone level.
- Metabolic panel
- Tests that look at blood sugar, kidney function, and electrolytes.
- PSA
- Prostate-specific antigen, a marker often checked for men on TRT.
- Baseline
- Your first results, used to measure changes over time.
Lab draw FAQ
What is a lab draw?
A lab draw is a quick blood test. A nurse takes a small sample from your arm, and the lab measures markers like hormones and metabolic health.
Do I need to fast before my lab draw?
No. You don't need to fast before a lab draw at Onus. You can eat and drink normally.
How long do lab results take?
Results usually come back in 2 to 5 days.
Who reviews my lab results?
A nurse practitioner reviews your results and your options with you over telehealth.
Can I walk in for a lab draw?
Lab draws at Onus are by appointment only. You can schedule online at any of our 7 locations.
How much does a lab draw cost?
Pricing depends on the panel. Hormone labs for BHRT and TRT are $150 to $170, and new clients save $50 on the Longevity Lab Panel.
Where can I get a lab draw in Denver?
At any of the 7 Onus locations: LoHi, Wheat Ridge, Boulder, Denver Tech Center, Central Park, Highlands Ranch, and Fort Collins.
What states do you serve for telemedicine?
We provide telemedicine services for residents of Colorado.
What is the contact information for the pharmacies?
Olympia Pharmacy: olympiapharmacy.com, phone 407-735-2201, 4600 LB McLeod Road, Orlando, FL 32811, inquiries@olympiapharmacy.com.
Your best days are still ahead.
Book a lab draw at any of our 7 Colorado locations. No fasting, results in days, reviewed with a nurse practitioner.
Schedule a Lab Draw