What blood tests do bodybuilders track?
The blood tests most often discussed in bodybuilding and strength communities fall into four groups: hormones (total and free testosterone, estradiol, SHBG, LH and FSH), general health panels (CBC and CMP), heart and metabolic markers (lipid panel, ApoB, A1c, fasting insulin), and thyroid, iron and vitamin markers. Hard training changes some of these numbers by itself, which matters when comparing results over time.
Which tests come up most, and what do they measure?
| Group | Tests | What they measure |
|---|---|---|
| Hormones | Total testosterone, free testosterone, estradiol, SHBG, LH, FSH, IGF-1 | Sex hormones, the protein that decides how much testosterone is free, the pituitary signals behind them, and a marker of growth hormone activity |
| General health | CBC, CMP | Red cells, white cells, platelets and hematocrit; kidney and liver markers, electrolytes and glucose |
| Heart and metabolic | Lipid panel, ApoB, hemoglobin A1c, fasting insulin | Cholesterol and the particles that carry it, three-month average blood sugar, and insulin |
| Thyroid, iron and vitamins | TSH, ferritin, vitamin D | Thyroid signaling, iron stores and vitamin D status |
There is no standard "bodybuilding panel". A bundle sold under that name is some selection of the tests above, and bundles overlap: a CMP already includes glucose, and a CBC already includes hematocrit, so check what a panel contains before adding single tests to it.
| Test | Cheapest | Highest | Services |
|---|---|---|---|
| Hemoglobin A1c | $0.66 | $99.00 | 18 |
| Complete Blood Count w/ Differential & Platelets (CBC) | $3.78 | $39.00 | 18 |
| Comprehensive Metabolic Panel (CMP) | $4.99 | $59.00 | 18 |
| Testosterone, Total | $6.05 | $129.00 | 18 |
| Lipid Panel | $7.42 | $59.00 | 18 |
| Sex Hormone-Binding Globulin (SHBG) | $8.00 | $99.00 | 16 |
| Apolipoprotein B | $11.34 | $89.00 | 17 |
| Estradiol, Ultrasensitive (LC/MS-MS) | $24.00 | $209.00 | 17 |
Why can hard training change a blood test result?
Because some routine markers come from muscle, and others shift with hydration.
- Creatinine, reported on a CMP, is made as muscle tissue breaks down. People with more muscle make more of it, and intense exercise and dehydration can raise it further. The kidney filtration estimate (eGFR) on the same report is calculated from creatinine, so it moves with it.
- Hematocrit, reported on a CBC, is the share of blood made up of red cells. Dehydration can push it up.
- Creatine kinase (CK) leaks from damaged muscle and rises after intense exercise. It isn't part of a CMP or CBC and is ordered on its own.
None of this turns a result into a diagnosis in either direction. Reference ranges vary by laboratory, sex and age, and a clinician reads a number against the person it came from.
How do people keep results comparable from one draw to the next?
By holding the conditions steady each time:
- The same lab company. Quest and LabCorp can use different methods and reference ranges for the same test, so switching between them adds noise to a trend.
- The same time of day. Testosterone is usually drawn in the morning, between about 7 and 10 a.m., because levels change over the day.
- The same fasting state. Glucose, insulin and triglycerides respond to a recent meal; fasting before a blood test covers what a fast allows.
- Distance from the hardest sessions. Before a CK test, providers may ask patients to avoid intense exercise for a few days, and many lifters book routine draws away from heavy training days for the same reason.
Sources
- Creatinine Test (MedlinePlus)
- Hematocrit Test (MedlinePlus)
- Creatine Kinase (MedlinePlus)
- Testosterone Levels Test (MedlinePlus)
Common questions
Is there a standard bodybuilding blood panel?
No. There is no official panel. Bundles sold under that name combine hormone, general health, heart and metabolic tests chosen by the seller, and they often overlap with each other.
What is the difference between total and free testosterone?
Total testosterone measures all testosterone in the blood. Free testosterone is the fraction not bound to proteins such as SHBG, usually calculated from total testosterone, SHBG and albumin.
Why are testosterone tests drawn in the morning?
Testosterone levels change over the course of the day, so labs usually draw it between about 7 and 10 a.m. A consistent time makes one result comparable with the next.
Why does the same hormone test cost so much more at some services?
Ordering services set their own prices for the same laboratory test, so the markup differs even when the lab and the assay are identical. Each test page here shows the live range.