At-home stress and health diagnostics
Capture objective signals across stress, metabolism, inflammation and more
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Measure the cost your body pays for stress
We measure allostatic load, the biological cost of stress, with validated tests
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Comprehensive diagnostics kit

Add-on tests

Follow-up tests

Explore each test
HEART RATE MONITORING
Recovery Analytics
One week of ECG-grade heart tracking to see how your body actually recovers
Markers
Night Recovery: how much of your sleep actually restores you
- Recovery while Asleep: restorative minutes per night
- Sleep Quantity: total sleep time and consistency
- Sleep Quality: HRV-based nervous-system recovery
- Sleep Time Regularity: consistency of bed and wake times
Stress & Recovery Balance: how strain and recovery trade off
- Recovery while Awake: restorative windows during the day
- Daily Stress and Recovery Profile: minute-by-minute stress map
Insight
- See how your body actually recovers, not how you think it does
- Spot days when work strain never lets your system come down
- Learn which routines lift your recovery, and which drain it
- Benchmark your recovery against peers in your age band
How to test
- Wear the sensor for one full week, Sunday to Saturday
- Skin-safe and waterproof: keep it on for showers and sleep
- Battery lasts the full week, no phone needed during wear
- Mail it back in the prepaid envelope when you are done
Scientific validation
- Method: ECG-grade heart tracking, every heartbeat, for a full week
- Landmark study: Föhr et al. (2016) validated HRV recovery scoring in workplace health
- Device: Firstbeat Bodyguard 3, used by Olympic teams and F1 medical staff

SALIVA SAMPLING
Saliva Cortisol Profile
6 saliva samples across 2 days reveal your daily cortisol rhythm
Biomarkers
- Cortisol Awakening Response (CAR): the morning ramp-up
- Waking cortisol (0 min): baseline on opening your eyes
- Morning cortisol (+30 min): peak of the awakening surge
- Diurnal cortisol slope: how cortisol falls through the day
- Pre-bed cortisol: how well you wind down at night
- Optional add-on: DHEA-S, testosterone, progesterone in saliva
Insight
- See how sharply your body ramps up energy each morning
- Read how well you wind cortisol down before bed
- Spot the flat cortisol curves that signal chronic strain
- Compare your daily rhythm against peers in your age band
How to test
- 3 samples per day (waking, +30 min, ~10 pm) across 2 workdays
- Passive saliva into a Salivette tube: no needles, no fasting
- Freeze tubes overnight, then mail in the prepaid envelope
- No coffee, food or brushing teeth in the 30 min before a sample
Scientific validation
- Method: LC-MS/MS mass spectrometry, the reference standard for cortisol
- Landmark studies: Chida & Steptoe (2009) linked the CAR to chronic stress. Adam et al. (2017) linked flat slopes to worse health
- Lab: Dresden LabService, led by Prof. Clemens Kirschbaum, the reference cortisol lab worldwide

HAIR SAMPLING
Stress Hormone History
A single 3 cm strand of hair reveals 3 months of your stress load
Biomarkers
- Long-Term Stress Load
- Cortisol: cumulative stress load, 3 months
- Cortisone: inactive cortisol, reveals turnover
- Cortisol / Cortisone ratio
- Long-Term Resilience Capacity
- DHEA: the stress-buffering hormone (+ DHEA / Cortisol ratio)
- Testosterone: vitality, suppressed by chronic stress
- Progesterone: the calming hormone, low levels raise reactivity
- Endocannabinoid System
- AEA: mood modulator
- 1/2AG: immune modulator
- PEA: neuroprotective modulator
Insight
- See the stress your body has absorbed over the last 3 months
- Tell acute strain apart from long-term hormonal depletion
- Read the balance between your stress and recovery hormones
- One sample covers 3 months, ideal for tracking change
How to test
- Cut a 3 cm strand, pencil-lead thick, near the scalp at the back
- No blood, no fasting, no timing rules: a one-minute sample
- Sealed in a paper envelope and mailed to the lab
- Bald or shaved head? A body-hair alternative works, ask us
Scientific validation
- Method: LC-MS/MS quantifies 5 steroids and 3 endocannabinoids in one sample
- Landmark studies: Gao et al. (2013) established multi-steroid hair analysis. Stalder & Kirschbaum (2012) validated hair cortisol for chronic stress
- Lab: Dresden LabService, 20+ years under Prof. Kirschbaum, the world reference lab

GLUCOSE MONITOR
Glucose Monitoring
A 10-day skin patch shows how your body handles glucose each day
Biomarkers
- Blood Glucose Score
- Average glucose (with estimated HbA1c)
- Glucose variability (coefficient of variation, %)
- Fasting glucose
- Bedtime glucose
- Glucose Spikes (rises >30 mg/dL, lasting >60 min)
- Average spike count per day
- Average spike height (mg/dL)
- Average spike duration (h:min)
- Time-in-range across the day
Insight
- See which meals and workouts spike your blood sugar
- Cut the mid-morning crashes and afternoon energy dips
- 10 days is enough to trial 2 or 3 food experiments
- Catch metabolic drift years before a blood test would
How to test
- Discreet skin patch worn on the upper arm for 10 days
- No finger-pricks: the sensor sits just under the skin
- Data streams to your phone every 5 minutes, no interruption
- Log 2 or 3 short food or timing experiments while you wear it
Scientific validation
- Method: continuous glucose sensing every 5 min, ~2,880 data points across 10 days
- Landmark studies: Battelino et al. (2019) set the global standard for time-in-range. Hall et al. (2018) showed spikes predict future disease
- Device: Dexcom G7, FDA-cleared medical-grade sensor. We re-analyze the raw signal

AT-HOME BLOOD TEST
Blood Testing
Virtually painless blood collection from the upper arm for micronutrients, inflammation markers and more
Available blood biomarkers
We test a wide range of blood markers validated for Tasso collection, including these kits:
- Standard Kit: 10 core markers covering lipids, inflammation, thyroid and the four fatigue-driving micronutrients
- Female Health Kit (Fertility, Menopause, Thyroid): ~9 markers including FSH, LH, Estradiol, Progesterone, DHEA-S, Prolactin, TSH, fT3, fT4, TPO-Ak
- Fitness & Metabolism Kit: ~8 markers including Fasting Glucose, HbA1c, Insulin, HOMA-IR, Testosterone, Cortisol, ApoB, hs-CRP
- Nutrient Kit: ~13 markers including Copper, Zinc, Selenium, Magnesium, Iron, Ferritin, Vitamin D, B12, Folate, Vitamin A, Vitamin E
Fitness, Metabolism and Nutrient kits are currently Germany-only (extra tube required)
Standard blood biomarkers (10 markers)
- Blood Lipids
- Total Cholesterol
- LDL
- HDL
- Triglycerides
- Micronutrients
- Vitamin B12 (Cobalamin)
- Vitamin D total
- Vitamin B9 (Folate)
- Ferritin
- Inflammation
- hs-CRP (high-sensitive C-reactive protein)
- Thyroid
- TSH
Insight
- Catch the silent drivers of fatigue: iron, B12, D, thyroid
- Read your cardiovascular baseline: lipids plus hs-CRP
- Adjust nutrition to what your body actually needs
- Pick the panel that matches your question
How to test
- Place the Tasso+ device on your upper arm and press the button to fill one small tube
- Virtually painless: no finger-prick, no vein puncture, no phlebotomist
- ~10 minutes at home, then mail the sample the same day
- Results reviewed by our physicians within 5 working days
Scientific validation
- Method: standard clinical assays, the same ones your GP's lab uses
- Landmark study: Wickremsinhe et al. (2023) showed Tasso+ arm samples match a standard venous draw for 10 routine blood markers (concordance above 0.95)
- Lab: German MVZ laboratory in Düsseldorf, DIN EN ISO 15189-accredited

STOOL TEST
Microbiome
A tiny stool sample maps your gut bacteria and your personal diet needs
Biomarkers
- The 4 main gut phyla: Bacteroidetes, Firmicutes, Proteobacteria, Actinobacteria
- 1,000+ bacterial species (over 99% of known gut bacteria)
- Bacterial diversity index (Shannon)
- Enterotype classification (B-type vs. P-type)
- Key species: F. prausnitzii, Akkermansia, Bifidobacterium, Lactobacillus
- Functional readouts: fibre fermentation, SCFAs, vitamin synthesis, immune, inflammation
Insight
- See which food families your microbiome ferments well
- Get a personalized fibre and prebiotic list
- Know whether a probiotic helps, and which strains to pick
- Track shifts every 3 to 6 months as your diet changes
How to test
- Tiny stool sample at home, only a rice-grain amount needed
- No fasting: the picture must reflect your real gut
- Sealed sample mailed to the lab in a prepaid envelope
- Results returned within 2 to 4 weeks
Scientific validation
- Method: 16S rRNA next-generation sequencing, the reference microbiome method
- Landmark study: Falony et al. (2016) mapped the healthy gut baseline in Science
- Lab: BIOMES Labs (Berlin), Europe's largest microbiome database, 51,000+ profiles

FITNESS SCREENING
Movement Screening BETA
Short at-home tests show where you are strong and where to train. Beta: kit and scoring are being finalized
Markers (assessment areas)
- Movement Quality
- Mobility (toe-touch, shoulder, deep squat, spinal rotation)
- Balance (Y-balance, left and right)
- Muscular
- Upper Body Strength (handgrip, left and right)
- Upper Body Endurance (60-second push-ups)
- Lower Body Strength (squat force)
- Lower Body Endurance (squat-hold time)
- Cardio
- Short-Duration Cardio (30-second sit-to-stand)
- Medium-Duration Cardio (VO2max)
Insight
- See where your body is strong and where the weak link is
- Get a peer percentile by age and sex across all 9 areas
- Receive a personalized training plan built around your gaps
- Re-test after 3 months to see what actually moved
How to test
- All 9 tests done at home in ~60 min with the kit we ship
- Filmed for the movement screen so we grade form too
- VO2max in 3.5 min using a chest-worn sensor, no treadmill
- Handgrip, push-ups and squats via a guided app protocol
Scientific validation
- Method: functional movement screen, validated field tests, seismocardiography VO2max
- Landmark studies: Leong et al. (2015) showed handgrip beats blood pressure as a mortality predictor in The Lancet. Ross et al. (2016) made VO2max a clinical vital sign for the AHA
- Devices: Ventriject Seismofit and Camry dynamometer, both used in top research centres

SCIENTIFIC QUESTIONNAIRE
Scientific Self‑Assessment
15 minutes of validated questionnaires reveal the gap between feel and data
Markers (validated instruments)
- Perceived Stress & Resilience
- Perceived Stress Scale (PSS-4)
- Brief Resilience Scale (BRS)
- Fatigue Assessment Scale (FAS)
- Maslach Burnout Inventory (MBI)
- Work Environment
- Job Content Questionnaire (JCQ / DCSQ)
- Effort-Reward Imbalance (ERI)
- Psychological Safety
- Mental Health Screeners
- PHQ-8 (mood)
- GAD-7 (anxiety)
- Body System Health
- Gastrointestinal Severity Index (GISI)
- Immune Status Questionnaire (ISQ)
- Nordic Musculoskeletal Questionnaire (Nordic MSQ)
- Habits
- Brief Pittsburgh Sleep Quality Index (B-PSQI)
- Food Frequency Questionnaire (FFQ)
Insight
- Surface the gap between what you feel and what your body shows
- Pinpoint the work drivers behind your stress load
- Screen for early signs of anxiety, low mood, or burnout
- Give our coaches the context to read your data as a person
How to test
- ~30 min via mobile app, done at a calm moment at home
- Answers stored encrypted and reviewed in confidence
- Re-test every 6 months to track subjective vs. objective drift
- No right or wrong answers: honesty makes the scores useful
Scientific validation
- Method: validated psychometric questionnaires only, every scale peer-reviewed
- Landmark studies: Cohen, Kamarck & Mermelstein (1983) is the original PSS, 45,000+ citations. Maslach & Jackson (1981) is the foundational burnout inventory
- Instrument credibility: the same scales used by WHO, EU-OSHA and the German BAuA
