InstalabAthlete Blood Panel
Should you take a Athlete Blood Panel test?
This test is most useful if any of these apply to you.
73 Biomarkers Included
- Lipids5
- Total CholesterolThe overall cholesterol figure, a starting point that the particle markers refine.Best interpreted alongside ApoB and the individual lipid fractions.
- LDL CholesterolThe most studied cholesterol marker for long-term heart risk.Elevated LDL is a consistent driver of cardiovascular risk over time.
- HDL CholesterolTracks the cholesterol-clearing side of the lipid system.Low HDL with high triglycerides suggests a metabolic rather than dietary pattern.
- VLDL CholesterolEstimates cholesterol carried in triglyceride-rich particles.Elevation tends to track with high triglycerides and metabolic strain.
- TriglyceridesMeasures circulating fat and is an early signal of how well your body handles fuel.High triglycerides often precede measurable blood-sugar problems.
- Inflammation3
- hs-CRPA sensitive marker of body-wide inflammation tied to cardiovascular risk and recovery status.Persistently high levels warrant looking for infection, overtraining, or cardiovascular risk.
- HomocysteineAn amino acid linked to B-vitamin status and cardiovascular risk.Elevation can reflect low folate or B12 and added heart risk.
- Uric AcidA metabolic byproduct tied to gout risk and metabolic health.High levels can flag metabolic strain or gout risk.
- Metabolic4
- InsulinShows how hard your body works to keep blood sugar in range.High fasting insulin can reveal insulin resistance before glucose rises.
- GlucoseA snapshot of blood sugar, the foundation of metabolic screening.Elevated fasting glucose is an early sign of impaired fuel handling.
- HbA1cReflects average blood sugar over about three months, smoothing out daily swings.A rising average signals worsening blood-sugar control over time.
- HOMA-IRA calculated insulin-resistance score combining glucose and insulin.A rising score flags early insulin resistance.
- Liver8
- AlbuminA major blood protein reflecting nutrition and liver function.Low albumin can signal poor nutrition or illness.
- ALPAn enzyme from liver and bone, part of liver-function screening.Interpretation depends on whether the source is bone or liver.
- ALTA liver enzyme; also a practical marker of fatty-liver and metabolic health.Persistent elevation warrants a metabolic and liver look.
- ASTAn enzyme from liver and muscle that rises after hard exercise.Post-exercise elevation usually reflects muscle, not liver injury.
- Total BilirubinA breakdown product of red cells that can rise with exercise-related red cell turnover.Mild elevation is common in athletes from red cell breakdown.
- Direct BilirubinThe processed form of bilirubin, helping localize a bilirubin rise.Guides whether elevated bilirubin is liver-related.
- GGTA liver enzyme sensitive to alcohol and bile-flow problems.Elevation helps separate liver from muscle causes of high enzymes.
- Total GlobulinThe antibody-and-transport protein fraction of total protein.Shifts can reflect inflammation or immune activity.
- Kidney7
- Total ProteinThe sum of blood proteins, a broad nutrition and health marker.Abnormal values prompt a look at nutrition and inflammation.
- BUNA waste product reflecting kidney function, protein intake, and hydration.Elevation often reflects dehydration or high protein intake, not disease.
- CreatinineA muscle byproduct used to estimate kidney filtration, but often high in muscular athletes.Elevation may reflect muscle mass or recent exercise, not kidney disease.
- Cystatin CA kidney-filtration marker unaffected by muscle mass, useful in athletes.It cross-checks creatinine when muscle mass clouds kidney estimates.
- eGFR (Creatinine + Cystatin C)A combined estimate of kidney filtering that is more reliable in muscular people.The most trustworthy kidney estimate when creatinine alone is misleading.
- eGFR (Cystatin C)Kidney filtration estimated from cystatin C alone, independent of muscle.Helpful when muscle mass distorts creatinine-based estimates.
- eGFR (Creatinine)The standard kidney-filtration estimate, which can read low in athletes.Interpret cautiously in muscular people and confirm with cystatin C.
- Thyroid4
- TSHThe pituitary signal that regulates the thyroid, screening for over- or underactive thyroid function.An abnormal value warrants confirming thyroid status with the hormone measures.
- Free T4The main circulating thyroid hormone, used with TSH and Free T3 to assess thyroid function.Read with TSH, it separates a true thyroid problem from a training-related shift.
- Anti-TPOAn antibody that reveals autoimmune thyroid activity behind abnormal thyroid numbers.A positive result points to autoimmune thyroid disease as the cause.
- Free T3The active thyroid hormone, which can fall as an early signal of chronically low energy intake.A low active thyroid hormone can flag under-fueling before other markers move.
- Electrolytes5
- CalciumA mineral essential for muscle, nerve, and bone function.Abnormal values warrant confirming and checking related minerals.
- ChlorideAn electrolyte that helps track hydration and acid-base balance.Read alongside sodium and bicarbonate for hydration status.
- SodiumA major electrolyte for hydration and nerve function, prone to swings in endurance sport.Low sodium can follow heavy sweating and overhydration.
- PotassiumAn electrolyte central to muscle and heart function.Abnormal values, if confirmed, deserve prompt attention.
- BicarbonateReflects acid-base balance, part of the electrolyte picture.Shifts help interpret hydration and metabolic state.
- Hormonal7
- DHEA SulfateAn adrenal hormone that helps round out the building-and-stress hormone picture.A falling level may accompany chronic stress or burnout, though evidence is preliminary.
- Total TestosteroneThe main tissue-building hormone and a core marker of building capacity and low-energy states in both sexes.Falling values, especially with low fueling, suggest under-recovery or low energy availability.
- Free TestosteroneThe unbound, active fraction of testosterone, which can drop even when total testosterone looks stable.Low free testosterone can reveal strain that the total measurement misses.
- SHBGA protein that binds sex hormones; when it rises, less active testosterone is available.A rising level with low energy availability helps explain low free testosterone.
- LHA pituitary hormone that signals the testes or ovaries; part of assessing low-energy or hormonal disruption from heavy training.Low LH with low testosterone points to a central, energy-related cause rather than a testicular one.
- FSHA pituitary hormone governing reproductive function; read with LH and estradiol when training disrupts the menstrual cycle or hormones.Abnormal FSH alongside cycle changes can flag training-related hormonal suppression worth a clinician's review.
- EstradiolThe main estrogen, central to bone and reproductive health and to spotting low-energy hormonal disruption in athletes of both sexes.Low estradiol can accompany low energy availability and raises concern for bone health.
- Nutrients9
- Vitamin D (25-hydroxy)The standard measure of vitamin D status, tied to bone health, muscle repair, and immunity in athletes.Deficiency is common and worth correcting, especially after a bone stress injury.
- Vitamin B12A nutrient essential for red blood cell formation and nerve function.Low B12 can contribute to fatigue and anemia.
- Vitamin B9Folate, needed for red blood cell production and healthy homocysteine levels.Low folate can raise homocysteine and impair red cell formation.
- ZincA mineral involved in immunity, tissue repair, and hormone function.Low zinc may affect immunity and recovery in heavy training.
- Total IronMeasures iron actively circulating in blood, one piece of the iron-status picture alongside ferritin and binding capacity.Low circulating iron with low ferritin supports true iron deficiency.
- Transferrin SaturationShows what percentage of your iron-transport capacity is filled, helping distinguish deficiency from overload.A low percentage suggests deficiency; a high one can flag iron overload.
- TIBCReflects how much spare iron-carrying capacity your blood has, which rises when stores run low.A high binding capacity alongside low iron points toward iron deficiency.
- FerritinThe best single measure of stored iron and the earliest marker to drop with endurance training, often before red blood cell counts change.A low value signals draining iron stores that can blunt training gains, even without full anemia.
- Omega-3 IndexMeasures the share of beneficial omega-3 fats in red blood cells, linked to recovery and heart health.A low index suggests dietary omega-3 intake is worth increasing.
- Red Blood Cells7
- RBC CountCounts red blood cells, part of the oxygen-delivery picture read with iron studies.Low counts prompt a look at iron status and plasma dilution.
- HemoglobinMeasures the oxygen-carrying protein in blood, central to endurance capacity.Low hemoglobin may reflect true anemia or training-related dilution.
- HematocritThe proportion of blood made up of red cells, sensitive to hydration and plasma shifts.Low values can reflect expanded plasma rather than lost red cells.
- MCVAverage red blood cell size, a clue to the cause of anemia.Small cells point toward iron deficiency as a cause.
- MCHAverage hemoglobin per red blood cell, supporting anemia workup.Low values suggest impaired hemoglobin production, often from iron deficiency.
- MCHCHemoglobin concentration within red cells, another anemia clue.Low values support an iron-deficiency picture.
- RDWMeasures variation in red cell size, an early hint of developing deficiency.A rising width can precede obvious anemia.
- Lipoproteins2
- ApoBCounts the cholesterol-carrying particles most likely to drive artery plaque, sharpening heart-risk assessment.High ApoB flags cardiovascular risk that a normal LDL number can hide.
- Lipoprotein(a)An inherited cholesterol particle that raises heart risk independent of lifestyle.A high, largely genetic value warrants earlier and closer cardiovascular attention.
- Immune Function6
- WBC CountTotal white blood cells, reflecting immune status and acute training stress.Values shift transiently after hard exercise, so timing matters.
- Neutrophil CountThe main infection-fighting white cells, also sensitive to exercise load.Changes can reflect recent training rather than illness.
- Lymphocyte CountImmune cells that can dip with heavy training stress.Persistent lows may reflect immune suppression from overload.
- Basophil CountA small white cell population involved in allergic responses.Rarely central, but part of a complete immune snapshot.
- Monocyte CountWhite cells involved in inflammation and tissue repair.Elevations may accompany inflammation or recovery from injury.
- Eosinophil CountWhite cells tied to allergy and parasitic response.Elevations point toward allergy or other non-training causes.
- Cancer Detection1
- Total PSAA prostate marker included for men's baseline health screening.Elevation in men warrants prostate follow-up unrelated to training.
- Toxins1
- MercuryScreens for mercury exposure, relevant to athletes eating large amounts of fish.Elevated mercury may prompt reviewing seafood intake.
- Bone & Muscle1
- Creatine KinaseAn enzyme released by damaged muscle, used to gauge training load and whether repair is keeping up between sessions.Persistently high values across rested days suggest incomplete recovery and higher injury risk.
- Stress & Recovery2
- CortisolThe primary stress hormone, reflecting the breakdown side of the training balance.Persistently high cortisol with low testosterone suggests the body is breaking down faster than it builds.
- IGF-1A growth-related hormone that tracks tissue building and tends to drop in prolonged low-energy states.Low IGF-1 alongside low testosterone strengthens a chronic low-energy-availability picture.
- Blood Clotting1
- Platelet CountCells that control clotting, part of a full blood-count screen.Abnormal counts warrant a repeat and further evaluation.
About Athlete Blood Panel
Hard training is a controlled stress. Done well, it makes you fitter; done past what your body can absorb, it drains iron, disrupts hormones, and slows repair before your times ever slip. This panel looks for those shifts while they are still fixable.
It reads many systems in one blood draw: the hormones that govern recovery, the iron that carries oxygen, the fuels your muscles burn, and the everyday markers of a healthy heart, liver, kidneys, and blood. No single test tells that story. The pattern across them does.
What This Panel Reveals
The most useful way to think about these 73 markers is not as a list but as five overlapping questions about your body under load.
Recovery and hormonal balance. Training pushes your body between building tissue and breaking it down. The panel tracks both sides: building signals like testosterone and a growth hormone helper called insulin-like growth factor 1 (IGF-1), and stress and breakdown signals like the hormone cortisol and a muscle-damage enzyme called creatine kinase (the CK test). Read together, they show whether you are adapting or accumulating fatigue faster than you clear it.
Iron and oxygen delivery. Endurance training quietly erodes iron stores, and low iron blunts the gains you would otherwise get from that training. The iron studies (ferritin, serum iron, transferrin saturation, and iron-binding capacity) plus the red blood cell counts show whether your oxygen-delivery system is well stocked or running low, often before you feel anemic.
Fuel and metabolism. How your body handles sugar and stores fat shapes both performance and long-term health. Glucose, hemoglobin A1c (a three-month blood-sugar average), insulin, and a calculated insulin-resistance score reveal how efficiently you turn food into usable energy, which can drift even in lean, fit people.
Heart and inflammation. Being athletic does not make you immune to cardiovascular risk. The lipid markers plus apolipoprotein B (ApoB, a count of harmful cholesterol particles), lipoprotein(a) (an inherited particle), and a sensitive inflammation marker called high-sensitivity C-reactive protein (hs-CRP) map heart risk from angles a basic cholesterol test cannot. Foundational markers for the thyroid, kidneys, liver, and full blood count round out the health picture.
How to Read Your Results Together
The value of a panel this broad is in the combinations. A few patterns are worth knowing before you look at your own numbers.
| Pattern | What It Suggests |
|---|---|
| Normal hemoglobin but low ferritin | Iron stores are draining even though you are not yet anemic. This is the earliest and most common athlete finding, and it responds well to correction. |
| Low testosterone, low IGF-1, high SHBG (a protein that ties up testosterone), sometimes high cortisol | A pattern that can accompany chronic low energy availability, when intake lags training. Worth pairing with thyroid and menstrual history. |
| Persistently high creatine kinase across rested days | Muscle repair is not keeping up between sessions, a signal to review recovery rather than add load. |
| Normal LDL but high ApoB or lipoprotein(a) | Heart risk your standard cholesterol number missed. These particle markers refine, rather than repeat, the lipid panel. |
Two research signals help illustrate these patterns. In a meta-analysis of well-trained men, athletes whose testosterone rose relative to cortisol tended to improve after hard training blocks, a moderate-to-large effect (d = 0.89, 95% CI 0.54 to 1.24); even so, expert consensus holds that this ratio reflects training strain rather than diagnosing overtraining. And in a single study of elite ice-sport athletes, injury risk rose about 1.7 times once creatine kinase reached roughly 489 units per liter, and about 2.6 times at roughly 467 units per liter in speed skaters, though these are sport-specific thresholds from one study, not broadly validated cutoffs. Both examples show why single values matter less than direction over time.
What to Do with Your Results
Start with what is most actionable. Low iron stores are the highest-yield finding in active people, especially those doing endurance work; many sports medicine programs act on ferritin below 30 nanograms per milliliter, though some experts favor higher cutoffs of 40 to 50, and retest after correcting intake. A vitamin D below 30 nanograms per milliliter is common and worth raising, with a target near 40 or above if you have had a bone stress injury.
A hormonal pattern suggesting low energy availability (low testosterone with low IGF-1 and rising SHBG) deserves a conversation about fueling and, for many people, a sports physician or endocrinologist. Elevated ApoB, lipoprotein(a), or hs-CRP points toward a cardiovascular workup rather than a training change. Abnormal thyroid, kidney, or liver markers usually warrant a repeat draw under clean conditions before anything else.
Serial tracking is where this panel earns its place. Because athletes vary widely from person to person, your own trend line is more informative than any population range. Retesting every three to four months, or around the start and peak of a training block, turns single snapshots into a moving picture of how you are adapting. Testing after a change confirms whether it worked.
When Results Can Be Misleading
Several confounders hit many of these markers at once. Endurance training expands blood plasma, which dilutes hemoglobin and can mimic anemia even when your total red cell mass is fine. A recent hard session transiently raises creatine kinase, liver enzymes, creatinine, and white cells, so a draw taken too soon after exercise can look alarming and mean little.
For the cleanest read, sample in the morning, rested, hydrated, and fasted, ideally a day or more after intense work. Ferritin also rises with any infection or inflammation, so a value that looks reassuring during illness may overstate your true iron stores. When a result surprises you, the first move is usually to repeat it under standardized conditions, not to act on it.