Insulin-Like Growth Factor 1 (IGF-1) Blood Test
Understand growth hormone activity with a steadier blood marker.
- No doctor visit or referral needed
- Members pay our cost on every test, never a markup
- Tracked over time alongside your other results
- HSA/FSA eligible
- Typical results in 2-4 days · Reviewed by a real clinician
- Drawn at a CLIA/CAP-accredited lab near you · Find labs
Why people order the Insulin-Like Growth Factor 1 (IGF-1) Blood Test
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Enlarging hands or feet, facial changes, unexplained sweating, or headaches
These changes can raise a clinician-directed question about growth hormone excess, but they are not specific to acromegaly or any one condition.
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Fatigue, reduced muscle mass, or lower bone density in a defined endocrine evaluation
These concerns have many common causes. IGF-1 should not be used as a first-line explanation for nonspecific fatigue alone.
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Track a clinician-directed intervention affecting the growth hormone axis
Serial results are most useful when the laboratory, assay, reference context, and treatment status are kept consistent.
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Establish an age- and sex-aware IGF-1 baseline
IGF-1 changes substantially across life, so the result must be compared with the performing laboratory's appropriate reference population.
Who may consider the Insulin-Like Growth Factor 1 (IGF-1) Blood Test
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A known pituitary or hypothalamic disorder, surgery, radiation, or significant head injury
IGF-1 may contribute to a broader clinician-directed assessment of the growth hormone axis.
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A known growth hormone disorder or prescribed growth hormone treatment
Repeat testing can help monitor a confirmed condition or treatment plan when interpreted with assay and clinical context.
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A prior unexpectedly high or low IGF-1 result
A repeat result can help confirm the finding before further clinician-directed evaluation.
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Evaluate suspected growth hormone excess or deficiency
IGF-1 is a useful screening marker, but growth hormone deficiency usually requires stimulation testing and excess may require suppression testing.
Is IGF-1 the right first blood test for assessing growth-hormone activity?
Often, when there is a defined pituitary, growth-hormone excess or deficiency, growth, or monitoring question. IGF-1 is steadier than a random growth hormone value because growth hormone secretion is pulsatile. IGF-1 does not diagnose growth-hormone excess or deficiency by itself.
Is this useful as a general wellness or longevity test?
Not as a standalone wellness, longevity, or hormone-maximization test. It is most useful when there is a defined clinical or monitoring question about the growth-hormone axis. An in-range or out-of-range result is not a diagnosis by itself.
Should I add IGFBP-3 or a growth hormone test?
IGFBP-3 can add context in selected growth evaluations, but it is not required for every IGF-1 order. A random growth hormone result is difficult to interpret because secretion is pulsatile. Growth hormone stimulation or suppression testing is clinician-directed rather than a routine consumer add-on.
Do I need to fast or change medicines or supplements before the test?
Fasting is generally not required for IGF-1 alone, but follow the selected order's instructions. Record medicines, supplements, and high-dose biotin because treatment or assay interference can affect interpretation. Some assays advise pausing high-dose biotin before collection, so do not stop a supplement without guidance.
What members say on Trustpilot
What the Insulin-Like Growth Factor 1 (IGF-1) Blood Test measures
Understand growth hormone activity with a steadier blood marker.
IGF-1 is a hormone that carries many of growth hormone's effects in the body. Growth hormone is released in pulses and varies through the day, while IGF-1 is more stable. Measuring IGF-1 is therefore a practical way to assess the growth hormone axis in the context of age, sex, symptoms, medical history, and other tests.
For someone with a defined growth hormone or pituitary question, or a clinician-managed growth hormone treatment plan, this single blood draw can establish a baseline or support tracking over time.
This product measures one IGF-1 concentration from a venous blood sample and reports the primary value in ng/mL. Current provider mappings use LOINC 2484-4. The laboratory may use a provider-specific method, and the report may include an age- and sex-specific reference interval. A Z-score is not guaranteed for every provider.
The product does not include growth hormone, IGF-binding protein 3, a growth hormone stimulation test, or a growth hormone suppression test. It does not diagnose growth hormone deficiency, acromegaly, a pituitary tumor, malnutrition, or another condition by itself. It is not a general longevity score, muscle-building target, or instruction to raise IGF-1.
- Specimen
- Serum or plasma
- Measures
- Mass concentration
- Reported biomarkers
- Insulin-Like Growth Factor 1
- Biomarker count
- 1 biomarker
- Fasting
- Special preparation needed (provider-specific biotin)
- Results
- On your Mito dashboard in 2-4 days, with your range explained
- Reference ranges
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Quest Diagnostics Test 16293 selected Labcorp Test 010363 selected
Quest Diagnostics Test 16293
- All, 18-19.9 years 108-548 ng/mL
- All, 20-24.9 years 83-456 ng/mL
- All, 25-29.9 years 63-373 ng/mL
- All, 30-39.9 years 53-331 ng/mL
- All, 40-49.9 years 52-328 ng/mL
- All, 50-59.9 years 50-317 ng/mL
- All, 60-69.9 years 41-279 ng/mL
- All, 70-79.9 years 34-245 ng/mL
- All, >80 years 34-246 ng/mL
Labcorp Test 010363
- Male, 18 years 145-506 ng/mL
- Female, 18 years 117-430 ng/mL
- Male, 19 years 122-435 ng/mL
- Female, 19 years 113-408 ng/mL
- Male, 20 years 116-410 ng/mL
- Female, 20 years 108-384 ng/mL
- Male, 21-25 years 109-353 ng/mL
- Female, 21-25 years 101-347 ng/mL
- Male, 26-30 years 101-307 ng/mL
- Female, 26-30 years 91-308 ng/mL
- Male, 31-35 years 95-290 ng/mL
- Female, 31-35 years 84-281 ng/mL
- Male, 36-40 years 90-278 ng/mL
- Female, 36-40 years 79-259 ng/mL
- Male, 41-45 years 84-270 ng/mL
- Female, 41-45 years 74-239 ng/mL
- Male, 46-50 years 81-263 ng/mL
- Female, 46-50 years 70-225 ng/mL
- Male, 51-55 years 74-255 ng/mL
- Female, 51-55 years 65-216 ng/mL
- Male, 56-60 years 68-247 ng/mL
- Female, 56-60 years 60-207 ng/mL
- Male, 61-65 years 64-240 ng/mL
- Female, 61-65 years 57-202 ng/mL
- Male, 66-70 years 59-230 ng/mL
- Female, 66-70 years 52-196 ng/mL
- Male, 71-75 years 53-222 ng/mL
- Female, 71-75 years 48-191 ng/mL
- Male, 76-80 years 45-207 ng/mL
- Female, 76-80 years 42-185 ng/mL
- Male, 81-85 years 40-194 ng/mL
- Female, 81-85 years 39-177 ng/mL
- Male, 86-90 years 33-176 ng/mL
- Female, 86-90 years 34-169 ng/mL
Your results
How to understand your Insulin-Like Growth Factor 1 (IGF-1) Blood Test result
IGF-1 gives a steadier view of growth hormone activity than a random growth hormone measurement. Because IGF-1 changes with age, sex, and assay method, the useful question is whether the result is expected for your context, not whether it reaches one universal target.
Below the expected range
Can support an evaluation of growth hormone deficiency, but it is not diagnostic. Nutrition, liver or metabolic health, and acute or chronic illness can also lower IGF-1. Adult diagnosis usually requires clinical context and clinician-directed stimulation testing.
Above the expected range
Can support concern about growth hormone excess when it matches the clinical picture, but one result does not identify the cause or diagnose acromegaly. Repeat testing and a clinician-directed suppression test may be needed. Higher is not inherently better.
How much the Insulin-Like Growth Factor 1 (IGF-1) Blood Test costs
Compare exact Mito member and non-member prices with recently checked comparable offers. Collection and lab fees are shown separately.
| Lab | Test price | Collection or lab fee |
|---|---|---|
| Mito member | $17.23 | $11.50 Added once per order |
| Mito non-member | $24.13 | $11.50 Added once per order |
| Goodlabs | $24.00 | $12.00 $12 per visit, included in the final checkout total |
| Marek Diagnostics | $40.00 | $10.00 $10 added at checkout for an individual biomarker or custom panel |
| DrSays | $24.99 | $9.99 $9.99 collection fee per order |
| Jason Health | $75.00 | $18.00 $18 lab collection fee per order |
| Ulta Lab Tests | $59.16 | $12.95 $12.95 standard draw fee; some locations may charge more |
| Walk-In Lab | $75.00 | $6.00 $6 per-order physician fee |
Mito prices come from the live catalog for the selected provider. Competitor prices were checked August 22, 2026. Published standalone item price plus the separately disclosed collection or checkout fee.
See the full Insulin-Like Growth Factor 1 (IGF-1) Blood Test cost comparison for provider details and comparison notes.
How it works
What to expect from your Insulin-Like Growth Factor 1 (IGF-1) Blood Test
- 1 Book instantly
Click, book, done. Choose a convenient lab location near you. Transparent, up-front pricing.
- 2 Quick lab visit
Testing to fit your schedule, usually 15 minutes or less. Walk-in and appointments available. Follow the preparation instructions for your order.
- 3 Results in 2-4 days
Your result posts straight to your dashboard as soon as the lab completes it.
- 4 Expert guidance
With membership, a clinician reviews your result and a personalized action plan follows, with clear next steps.
Every result comes with a plan
A number on its own does not tell you much. Membership is what turns it into next steps, and keeps track of what changes.
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Insights that connect the dots. A clinician reads your whole picture, not one result in isolation, connecting family history, past results, and lifestyle into clear next steps.
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Your personalized action plan. Nutrition, supplements, and training in one clinician-reviewed protocol, updated as your results change.
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Track your trends. Upload results from any lab and see each biomarker trend over time, so you know what is working.
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Never miss a recheck. Mito tells you what is worth retesting and when, then reminds you so nothing slips.
Insulin-Like Growth Factor 1 (IGF-1) Blood Test testing you can trust
Run to clinical-grade standards
- Processed at the same CLIA and CAP-accredited national labs your doctor uses
- Order online, no doctor visit or referral needed
- Your data is encrypted, handled under HIPAA, and never sold
Overseen by our Care Team Lead
Every result, including your Mito Brain analysis, is checked by Rhonda Collins, FNP-C, our Care Team Lead and a board-certified Family Nurse Practitioner with over 15 years of nursing experience across cardiac ICU, primary care, and dermatology.
Meet RhondaWhat members are saying
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@nasdaily
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15/10 experience - I felt actually taken care of
Super impressed with my Mito experience - the thoroughness of the intake, the data tracking and the doctor's visit.
RS Reena Sudan -
@ellarosemcfadin
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Helped show an overall picture
I would highly recommend this service to anyone that wants a more in-depth picture of their health and labs. The platform is super user friendly.
BS Bo Sal -
@katelyn_kim
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Specific and actionable advice
It felt like, for the first time, I had real data guiding me to make meaningful changes and I've definitely noticed the difference.
MH Maya Hickey -
@bryce_witmer
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Tired of arguing with my PCP
After extensive research, I decided Mito was the best option. The insights were clear and make sense. Mito gave me peace of mind and a path to follow.
JO Josh -
@alexandradawson
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3x the tests for less money
A great alternative to the basic blood work at your local clinic. Love the report card format. Much better value.
P Page -
@daniklass
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Best $9 a month I spend
The action plan changes every time new results come in. I've actually never had a health company recommend doing less. Refreshing.
DP Devi Patel -
@natalieefer
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Finally, prices that make sense
Every test is published. I can see what it costs and what I save as a member. No surprises.
KT Kenji Tanaka -
@tyler_sarkisian
Everything your health needs,
in one membership
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Every test at our cost
Members pay our cost on every test, with lab fees passed straight through. The full receipt is itemized, never padded.
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Continuous tracking, all in one place
Upload past labs and watch your trends over time. Every marker and visit lives in one longitudinal record, so all your care stays together.
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Year-round clinician support
Text anytime and get clinician-reviewed answers. When you want to go deeper, 1:1 consultations are available at affordable rates.
Common Insulin-Like Growth Factor 1 (IGF-1) Blood Test questions
What does an IGF-1 blood test measure?
Is IGF-1 the same as insulin?
Can this test diagnose growth hormone deficiency?
Can this test diagnose acromegaly?
Is a higher IGF-1 result better?
Will my report include a Z-score?
How do age, sex, and provider assay affect an IGF-1 result?
When is repeat IGF-1 testing useful?
How do availability and prices vary by state?
Available in all 50 states and Washington, DC.
| States | Provider | Availability | Member price | Non-member price |
|---|---|---|---|---|
| All states and DC except NJ, NY, and RI | Labcorp | Available | $17.23 | $24.13 |
| All states and DC except NJ, NY, and RI | Quest Diagnostics | Available | $19.45 | $27.23 |
| NJ, NY, and RI | BioReference | Available | $22.37 | $31.32 |