Overview of Integrated Clinical Mass Spectrometry Reagent Kits

Mass spectrometry technology is increasingly being applied in clinical laboratory testing and has become the gold standard or a routine analytical method for the detection of hormones, amino acids, vitamins, drugs, and novel biomarkers. With the gradual development of standardized methods and reagents, clinical mass spectrometry has become a crucial component in routine clinical laboratory applications.

Virtue Diagnostics focuses on the field of clinical mass spectrometry and is committed to providing customers with integrated solutions encompassing instruments, reagents, and services. This article introduces several of Virtue Diagnostics' commercialized clinical mass spectrometry reagent kits.

I. Multi-Vitamin Detection Kit

1. Clinical Significance

Vitamins are a class of trace organic substances essential for humans and animals to maintain normal physiological functions, playing vital roles in growth, metabolism, and development. They are categorized into fat-soluble vitamins (A, D, E, K) and water-soluble vitamins (B vitamins and vitamin C).

Vitamin insufficiency or excess is widespread in China. Experts estimate that approximately one in three individuals may have subclinical vitamin deficiency, particularly among pregnant women, children, and the elderly.

2. Detection Indicators

• Fat-soluble vitamins: Vitamin A, Vitamin D, Vitamin E, Vitamin K
• Water-soluble vitamins: Vitamin B1, B2, B3, B5, B6, B7, Vitamin C

3. Vitamin Deficiency & Excess Symptoms

Vitamin	Deficiency Symptoms	Overdose Symptoms
Vitamin A	Nutritional anemia, night blindness, corneal dryness, dry and flaky skin	Bone decalcification, growth inhibition; dry and itchy skin, headache, muscle weakness
Vitamin D	Rickets in children, osteoporosis in adults	Headache, anorexia, nausea, vomiting, thirst, drowsiness, polyuria, high fever
Vitamin E	Infertility, miscarriage, muscular atrophy	Acute poisoning, may cause thrombosis, lead to menorrhagia or amenorrhea
Vitamin K	Bleeding disorders	Severe jaundice or hemolytic anemia, liver cell damage, allergic reactions
Vitamin B1	Neuritis, beriberi, loss of appetite, indigestion, growth retardation	Dizziness, diarrhea, edema, arrhythmia
Vitamin B2	Oral ulcers, dermatitis, angular cheilitis, glossitis	Renal tubular obstruction, oliguria, kidney dysfunctions

4. Target Population

• Pregnant and lactating women, children, the elderly, and other vulnerable groups prone to deficiencies
• Postoperative patients
• Cancer patients
• Patients with autoimmune diseases
• Patients with kidney or liver diseases
• Patients with osteoporosis or low-trauma fractures
• Individuals with gastrointestinal disorders
• People engaged in long-term indoor or night-shift work
• Obese individuals

5. Reagent Kit Advantages

II. Steroid Hormone Detection Kit

1. Clinical Significance

Steroid hormone testing can be used for the screening and diagnosis of conditions such as Congenital Adrenal Hyperplasia (CAH) and Polycystic Ovary Syndrome (PCOS).

PCOS is a common endocrine and metabolic disorder with a prevalence of approximately 5%-10% among women of reproductive age. Common clinical manifestations include menstrual irregularities, infertility, hyperandrogenemia, and polycystic ovarian morphology.

2. Hormone Categories & Detection Indicators

Category	Indicators	Clinical Note
Androgens	Testosterone, Androstenedione, DHEA, DHEA-S, DHT	Elevated levels are most typical in PCOS
Progestogens	17-OH-P, Progesterone	Distinguish from NCCAH
Glucocorticoids	Cortisol, Cortisone	Rule out Cushing's syndrome
Estrogens	Estrone, Estradiol, Estriol	Evaluate ovarian function

3. Target Population

• Female patients with polycystic ovarian morphology
• Patients with obesity, diabetes, dyslipidemia
• Patients on long-term hormone therapy
• Individuals preparing for pregnancy
• Menstrual disorders (irregular, infrequent periods), amenorrhea
• Manifestations of hyperandrogenemia: hirsutism, acne, virilization, alopecia
• Ovulation disorders, infertility, recurrent miscarriage

4. Reagent Kit Advantages

III. Catecholamine and Metabolites Detection Kit

1. Clinical Significance

Pheochromocytoma (PCC) and Paraganglioma (PGL), collectively termed PPGL, are neuroendocrine tumors that cause endocrine hypertension. PPGLs synthesize, secrete, and release large amounts of catecholamines (CAs), leading to a series of clinical syndromes including elevated blood pressure and metabolic alterations.

Catecholamines and their metabolites are highly polar, structurally similar, exist at low concentrations in plasma, and are subject to significant interference. Traditional clinical methods cannot simultaneously detect catecholamines and their metabolites. The 2020 edition of the Expert Consensus recommends LC-MS/MS as the preferred method.

2. Target Population

• Patients with paroxysmal hypertension
• Patients with accelerated/malignant hypertension
• Patients with previously controlled hypertension experiencing sudden worsening
• Hypertensive patients under 30 years old
• Patients with unexplained hypokalemia
• Patients presenting with the classic triad of headache, palpitations, and sweating
• Patients with adrenal incidentalomas

3. Detection Indicators

• Catecholamines: E (Epinephrine), NE (Norepinephrine), DA (Dopamine)
• Metabolites: MN (Metanephrine), NMN (Normetanephrine), 3-MT (3-Methoxytyramine)

4. Reagent Kit Advantages